,

How Check Engine Lights Work

Check engine lights can seem mysterious. Understanding how a check engine light occurs greatly increases the likelihood of repairing the issue. Generally speaking, it’s all just voltage.

CEL-Loop

Battery voltage enters the engine control unit. Battery voltage will be about 12 volts, but may be higher or lower. In order for the computer to work accurately, it needs a steady and constant voltage supply. The computer therefore takes battery voltage and reduces it to reference voltage. Reference voltage will be much lower than battery voltage, and commonly is 5 volts

The reference voltage then enters a sensor of some kind. Based on what the sensor is seeing, it will have a varying level of resistance. A temperature sensor may increase in resistance as the temperature increases. The amount of resistance combined with the known reference voltage allows the car to calculate the sensor’s environment (temperature, throttle position, etc)

If 5 volts enter a sensor that has 2 volts of resistance, then the computer will see 3 volts as the signal voltage. The car then compares what the sensor is reading to what it expects to see. If the voltage is not within the accepted levels, a check engine light results. The process by which a car sends reference voltage to a sensor and the sensor returns a signal voltage for the computer to read is known as closed loop diagnostics. The voltage is sent out, and returned, completing a loop.

So far, it’s fairly simple. The difficulty occurs when there are multiple components working together in a loop.

Read more

Common Check Engine Light Causes

Here is a list of the most common check engine lights (CELs P Codes) and their common causes and common symptoms.

To diagnose many of the problems, you will need little more than a test light, a volt meter, a vacuum gauge and maybe a can of brake clean. A hand held code puller/ data reader such as this….

This is a relatively inexpensive scan tool made by autolink. It pulls codes as well as reads and displays your basic drive-ability data. I would recommend this to anyone who wants to repair any modern car (1996 or newer). I have one, and I use it all day long. It is very handy.

automotive repair scan tool

Oxygen sensor codes

Oxygen sensor codes generally mean the oxygen sensor has failed. The oxygen sensor is in the exhaust, and reads the exhaust in order for the computer to finely tune the amount of fuel the engine needs.

Oxygen Sensor

Bank 1 sensor is on the side of the motor with the number one cylinder, bank 2 is the other side. Sensor 1 is in the exhaust, on the motor side (upstream) of the catalytic converter, sensor 2 is on the other side (down stream) of the cat. Check and make sure the sensor has power, ground and it’s reference voltage (usually 5 or 1 volts). The signal should switch back and forth between low and high voltage.

Make sure the vehicle is not stuck in a lean or rich condition. Introduce a vacuum leak, and see if the signal voltage changes. Then add fuel (brake clean through a vacuum port) and see if the signal changes. 6 times out of 10 the sensor is bad, 3 times out of 10 there is a vacuum leak or rich condition. The codes that are for heater circuit are almost always the sensor, otherwise there is a broken wire somewhere.

Symptoms include, poor gas mileage, poor power, rough idle, fail emission testing. Vehicle should start and run even if the oxygen sensor is unplugged.

  • P0051 HO2S Heater Control Circuit Low (Bank 2 Sensor 1)
  • P0052 HO2S Heater Control Circuit High (Bank 2 Sensor 1)
  • P0130 02 Sensor Circuit Malfunction (Bank 1 Sensor 1)
  • P0131 02 Sensor Circuit Low Voltage (Bank 1 Sensor 1)
  • P0132 02 Sensor Circuit High Voltage (Bank 1 Sensor 1)
  • P0133 02 Sensor Circuit Slow Response (Bank 1 Sensor 1)
  • P0134 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
  • P0135 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
  • P0136 02 Sensor Circuit Malfunction (Bank 1 Sensor 2)
  • P0137 02 Sensor Circuit Low Voltage (Bank 1 Sensor 2)
  • P0138 02 Sensor Circuit High Voltage (Bank 1 Sensor 2)
  • P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2)
  • P0140 02 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
  • P0141 02 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
  • P0150 02 Sensor Circuit Malfunction (Bank 2 Sensor 1)
  • P0151 02 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
  • P0152 02 Sensor Circuit High Voltage (Bank 2 Sensor 1)
  • P0153 02 Sensor Circuit Slow Response (Bank 2 Sensor 1)
  • P0154 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
  • P0155 02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
  • P0156 02 Sensor Circuit Malfunction (Bank 2 Sensor 2)
  • P0157 02 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
  • P0158 02 Sensor Circuit High Voltage (Bank 2 Sensor 2)
  • P0159 02 Sensor Circuit Slow Response (Bank 2 Sensor 2)
  • P0160 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
  • P0161 02 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)

Mass Air Flow (MAF) Codes

Mass Air Flow (MAF) Codes generally mean the MAF has gone bad or there is a major vacuum leak. The MAF is the main way the engine monitors the amount of air going into the engine in order to determine how much fuel the engine needs.

Mass Air Flow Sensor

First and foremost check to see if there are any vacuum leaks. Watch your short term and long term fuel trims. If there is a vacuum leak, they should be adding fuel. Spray the intake and intake manifold with brake clean and look for the fuel trims to go back to 0, and even start pulling fuel. If the fuel trims, particularly the short term trims, pull fuel, you have found a vacuum leak.

Check and make sure the sensor has power, ground and it’s reference voltage (usually 5 or 1 volts). If the car runs with a MAF code, tap the MAF while the engine is running and see if the engine bobbles or dies. Often times a bad MAF will cause the engine to not start.

Other symptoms would be extremely poor gas mileage, extremely poor running condition, and fail emission testing. 5 times out of 10 the sensor is bad, 4 times out of 10 there is a vacuum leak.

  • P0100 Mass or Volume Air Flow Circuit Malfunction
  • P0101 Mass or Volume Air Flow Circuit Range/Performance Problem
  • P0102 Mass or Volume Air Flow Circuit Low Input
  • P0103 Mass or Volume Air Flow Circuit High Input
  • P0104 Mass or Volume Air Flow Circuit Intermittent

Manifold Absolute Pressure (MAP)

Manifold Absolute Pressure (MAP) codes generally mean the MAP is bad, or there is a major vacuum leak. The MAP sensor is one major way the computer decides how much fuel the engine needs. Some cars have a stand alone MAP, some have a MAP sensor built into the MAF.

First and foremost check to see if there are any vacuum leaks. Cars that use only a MAP to meter fuel will often be rich if there is a vacuum leak. Watch your short term and long term fuel trims. Spray the intake and intake manifold with brake clean and look for the fuel trims to start pulling fuel. If the fuel trims, particularly the short term trims, pull fuel, you have found a vacuum leak.

Check and make sure the sensor has power, ground and it’s reference voltage (usually 5 or 1 volts). Also make sure there is good vacuum going into the MAP sensor.

Often times a bad MAP will cause the engine to not start. Other symptoms would be extremely poor gas mileage, extremely poor running condition, and fail emission testing. 5 times out of 10 the sensor is bad, 4 times out of 10 there is a vacuum leak.

  • P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
  • P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
  • P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input

Engine Coolant Temperature (ECT)

Engine Coolant Temperature (ECT) codes generally mean the coolant temperature sensor is bad, or the car is out of coolant. The ECT effects the amount of fuel the computer supplies the engine. Engines need more fuel to start and run when they are cold. Keep in mind the engine almost always has two ECT sensors, one for the gauge and one for the computer.

Wait for the car to cool down, and make sure it is full of coolant. If the car is full of coolant, put a new sensor in, they are cheep and easy.

Symptoms of a bad ECT sensor include, poor gas mileage, hard to start, no start, car over heating due to cooling fans not coming on, and fail emission testing. Very common failure on all makes, remember there are almost always two, two wire ECT sensors, one for the gauge one for the computer.

6 out of 10 times the sensor is bad, 4 out of 10 times the vehicle is low on coolant.

  • P0115 Engine Coolant Temperature Circuit Malfunction
  • P0116 Engine Coolant Temperature Circuit Range/Performance Problem
  • P0117 Engine Coolant Temperature Circuit Low Input
  • P0118 Engine Coolant Temperature Circuit High Input

Throttle Position Sensor (TPS)

Throttle Position Sensor (TPS) codes generally mean the TPS is bad, or the throttle plate is some how out of adjustment. The throttle body may be dirty, the throttle cable may be to tight, the throttle adjustment screw may need to be tweaked. If the vehicle is drive by wire ( a vehicle which does not have a throttle cable) the throttle body may just need to be reset through a factory type scan tool.

Symptoms include poor or no throttle response, poor gas mileage, low or high idle, improper shifting ( with automatic transmissions).

8 out of 10 times the sensor is bad.

  • P0121 Throttle Position Sensor/Switch A Circuit Range/Performance Problem
  • P0122 Throttle Position Sensor/Switch A Circuit Low Input
  • P0123 Throttle Position Sensor/Switch A Circuit High Input

Coolant temperature too low

The vehicle is not reaching operating temperatures. Almost always a thermostat stuck open, but can also be a faulty engine coolant temperature sensor.

Symptoms include poor gas mileage.

P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
P0128 Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)

Gross fuel trim failure

Gross fuel trim failure are common and have multiple causes. Vacuum leak, bad oxygen sensor, fuel leaking from fuel pressure regulator into manifold, failed fuel injector, bad coolant temperature (ECT) sensor, bad manifold pressure (MAP) sensor, bad mass air flow (MAF) sensor.

First determine if the trims are lean or rich. Then go down the list of causes until you find a gross failure. ECT sensor reading 0 degrees even though the vehicle is hot. A MAP or MAF sensor at 0 volts. A Major vacuum leak, the kind you can hear and is the size of your finger. Generally gross fuel trim failures are easy to find.

P0170 Fuel Trim Malfunction (Bank 1)
P0171 System too Lean (Bank 1)
P0172 System too Rich (Bank 1)
P0173 Fuel Trim Malfunction (Bank 2)
P0174 System too Lean (Bank 2)
P0175 System too Rich (Bank 2)

Misfire

Misfire codes – suck, squish, bang, blow gone wrong. Poor quality or incorrect ignition parts, failed injector, burnt valve, improper camshaft/ crankshaft timing, improper ignition timing, low quality gas (water in fuel), low compression (bad rings).

If you have a particular cylinder misfire, then it is a little easier to find the cause. If you have several misfires, or a random/ multiple misfires, check all the cylinders and also pay close attention to fuel trims. Pull the spark plug, check to ensure it is the proper plug. Check the gap and look for a burn mark down the side. Do a compression check. If compression is low, proceed with a leak down test.

If compression is good, put the plug back in and run the vehicle with a ignition stress tester in line.

Ignition Tester

This is a tester you can put in line in your ignition system. By making the spark jump a gap, you can stress the ignition system and find a failing system. Very handy. If the spark is ok, check to ensure you injector is clicking.

If you suspect a faulty part, (coil, spark plug, injector) you can always move that one part to another cylinder, clear the codes and then see if the misfire moves to the new cylinder.

P0300 Random/Multiple Cylinder Misfire Detected
P0301 Cylinder 1 Misfire Detected
P0302 Cylinder 2 Misfire Detected
P0303 Cylinder 3 Misfire Detected
P0304 Cylinder 4 Misfire Detected
P0305 Cylinder 5 Misfire Detected
P0306 Cylinder 6 Misfire Detected
P0307 Cylinder 7 Misfire Detected
P0308 Cylinder 8 Misfire Detected
P0309 Cylinder 9 Misfire Detected
P0310 Cylinder 10 Misfire Detected
P0311 Cylinder 11 Misfire Detected
P0312 Cylinder 12 Misfire Detected

Knock sensor

Knock sensor codes generally mean the knock sensor has gone bad. Can be wiring, almost never is. Very common problem on imports.

P0325 Knock Sensor 1 Circuit Malfunction (Bank I or Single Sensor)
P0326 Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single sensor)
P0327 Knock Sensor 1 Circuit Low Input (Bank I or Single Sensor)
P0328 Knock Sensor 1 Circuit High Input (Bank I or Single Sensor)
P0329 Knock Sensor 1 Circuit Intermittent (Bank 1 or Single Sensor)
P0330 Knock Sensor 2 Circuit Malfunction (Bank 2)
P0331 Knock Sensor 2 Circuit Range/Performance (Bank 2)
P0332 Knock Sensor 2 Circuit Low Input (Bank 2)
P0333 Knock Sensor 2 Circuit High Input (Bank 2)
P0334 Knock Sensor 2 Circuit Intermittent (Bank 2)

Crankshaft Position

Crankshaft Position generally means the sensor has gone bad, or a timing belt that has skipped a tooth. Many vehicles, particularly Audi and VW will throw a Crankshaft Position if the are turned over too many times with out starting. For example, if the fuel pump goes out, and you try long enough to start the car, a Crankshaft Position code will appear.

P0335 Crankshaft Position Sensor A Circuit Malfunction
P0336 Crankshaft Position Sensor A Circuit Range/Performance
P0337 Crankshaft Position Sensor A Circuit Low Input
P0338 Crankshaft Position Sensor A Circuit High Input
P0339 Crankshaft Position Sensor A Circuit Intermittent

Camshaft Position

Camshaft Position generally means the sensor has gone bad or a timing belt that has skipped a tooth. Could also be a clogged or failed variable valve timing solenoid gone bad. Generally, a vehicle uses the crankshaft position sensor for gross fuel and spark control, and the camshaft position sensor for fine tuning. Therefore, a bad camshaft sensor may cause a rough idle, or poor gas mileage, or poor performance, but may the vehicle will still run. On other cars loss of a camshaft position sensor will cause the vehicle to not start at all.

P0340 Camshaft Position Sensor Circuit Malfunction
P0341 Camshaft Position Sensor Circuit Range/Performance
P0342 Camshaft Position Sensor Circuit Low Input
P0343 Camshaft Position Sensor Circuit High Input
P0344 Camshaft Position Sensor Circuit Intermittent
P0345 Camshaft Position Sensor A Circuit Malfunction (Bank 2)
P0346 Camshaft Position Sensor A Circuit Range/Performance (Bank 2)
P0347 Camshaft Position Sensor A Circuit Low Input (Bank 2)
P0348 Camshaft Position Sensor A Circuit High Input (Bank 2)
P0349 Camshaft Position Sensor A Circuit Intermittent (Bank 2)

Exhaust Gas Recirculation (EGR)

Exhaust Gas Recirculation (EGR) codes will rarely cause any type of drive-ability issues. The EGR system is mainly present to reduce emissions (NOX). The EGR valve could be bad, lack of vacuum to the actuator, actuator could be bad, ports could be clogged.

Many vehicles are equipped with an EGR temp sensor that tells the computer the EGR valve has opened, that sensor could be bad. Many cars use the MAP sensor to tell if the EGR valve has opened, so if you have a vacuum leak or a faulty MAP sensor, you could get an EGR could in error.

Check your vacuum supplies, ensure the EGR valve opens, whether electric or vacuum opened, and dig into the theory of how this particular vehicle opens, and monitors the EGR valve.

P0400 Exhaust Gas Recirculation Flow Malfunction
P0401 Exhaust Gas Recirculation Flow Insufficient Detected
P0402 Exhaust Gas Recirculation Flow Excessive Detected
P0403 Exhaust Gas Recirculation Circuit Malfunction
P0404 Exhaust Gas Recirculation Circuit Range/Performance

Secondary Air

Secondary Air codes will rarely cause any type of drive-ability issues. The Secondary Air Injection system is mainly present to reduce emissions. Check to see that the air pump, whether belt driven or electric, is moving air, and that the air is getting to the exhaust. Very common problem on VW and Audi due to broken plastic tubes that direct the air. Could also be turned on in error due to a vacuum leak or a bad oxygen sensor.

P0410 Secondary Air Injection System Malfunction
P0411 Secondary Air Injection System Incorrect Flow Detected

Catalyst (Cat)

Catalyst (Cat) codes generally mean the cat has gone bad. Can be causes by a bad oxygen sensor, but that is generally not normally the case. Very hard to test a cat without shop equipment.

Bad cats will rarely have any symptoms, if they are plugged they will cause poor gas mileage, rough running, lack of power.

P0420 Catalyst System Efficiency Below Threshold (Bank 1)
P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)

Evaporative Emission Control System

Evaporative Emission Control System codes are generally hard to diagnose without shop equipment. Your best bet is to replace the gas cap and hope for the best. If the code comes back, you will need a smoke machine to properly find the leak. Any decent shop will have one.

P0440 Evaporative Emission Control System Malfunction
P0442 Evaporative Emission Control System Leak Detected (small leak)
P0455 Evaporative Emission Control System Leak Detected (gross leak)

Fuel Level

Fuel Level codes generally mean the fuel level sensor in the tank has gone bad.

P0460 Fuel Level Sensor Circuit Malfunction
P0461 Fuel Level Sensor Circuit Range/Performance
P0462 Fuel Level Sensor Circuit Low Input
P0463 Fuel Level Sensor Circuit High Input
P0464 Fuel Level Sensor Circuit Intermittent

Vehicle Speed

Vehicle Speed codes generally mean the sensor has gone bad.

P0500 Vehicle Speed Sensor Malfunction
P0501 Vehicle Speed Sensor Range/Performance
P0502 Vehicle Speed Sensor Low Input
P0503 Vehicle Speed Sensor Intermittent/Erratic/High

Idle Control System

Idle Control System codes – vacuum leak, failed idle air control (IAC) valve, dirty throttle body. Basically the vehicle has lost the ability to control the idle, either due to the idle control system failing, or some fort of gross fuel trim failure.

P0505 Idle Control System Malfunction
P0506 Idle Control System RPM Lower Than Expected
P0507 Idle Control System RPM Higher Than Expected

Transmission

Transmission codes are never a good sign. Short of a bad solenoid, or maybe a bad torque converter, you generally are due for a transmission rebuild if you have any transmission codes present. Check the fluid level, top off with the proper fluid if low.

P0730 Incorrect Gear Ratio
P0731 Gear I Incorrect ratio
P0732 Gear 2 Incorrect ratio
P0733 Gear 3 Incorrect ratio
P0734 Gear 4 Incorrect ratio
P0735 Gear 5 Incorrect ratio
P0736 Reverse incorrect gear ratio
P0740 Torque Converter Clutch Circuit Malfunction
P0741 Torque Converter Clutch Circuit Performance or Stuck Off
P0742 Torque Converter Clutch Circuit Stock On
P0743 Torque Converter Clutch Circuit Electrical
P0744 Torque Converter Clutch Circuit Intermittent
P0510 Closed Throttle Position Switch Malfunction

Check Engine Light – Diagnostic Trouble Codes

This is a list of Generic trouble codes. To see manufacturer specific codes, click the name of the manufacturer.

Read more

Acura Specific Trouble Codes

Acura Trouble Codes 1100-1199

P1106 BARO Sensor Circuit Range/Performance Malfunction
P1107 BARO Circuit Low Input
P1108 BARO Circuit High Input
P1121 Throttle Position Lower Than Expected
P1122 Throttle Position Higher Than Expected
P1128 MAP Lower Than Expected
P1129 MAP Higher Than Expected

Acura Trouble Codes 1200-1299

P1259 VTEC System Malfunction
P1297 ELD Circuit Low Input
P1298 ELD Circuit High Input

Acura Trouble Codes 1300-1399

P1300 Random Misfire
P1336 Crankshaft Speed Fluctuation Sensor Intermittant Interruption
P1337 Crankshaft Speed Fluctuation Sensor No Signal
P1359 Crankshaft Position/TDC/Cylinder Position Sensor Connector Disconnection
P1361 TDC Sensor Intermittent Interruption
P1362 TDC 1 Sensor No Signal
P1366 TDC 2 Sensor Intermittent
P1367 TDC 2 Sensor No Signal
P1381 Cylinder Position Sensor Intermittant Inturruption
P1382 Cylinder Position Sensor No Signal

Acura Trouble Codes 1400-1499

P1456 EVAP System Leak Detected (Fuel Tank System)
P1457 EVAP Control System Leak Detected (Control Canister System)
P1491 EGR Valve Lift Insufficient Detected
P1498 Voltage Problem In EGR Valve Position Sensor Circuit

Acura Trouble Codes 1500-1599

P1508 Idle Air Control Valve Circuit Failure
P1519 IAC Valve Circuit Failure

Acura Trouble Codes 1600-1699

P1607 ECM/PCM Internal Circuit Failure
P1656 Automatic Transaxle System Malfunction
P1660 A/T FI Data Line Failure
P1676 FPTDR Signal Line Failure
P1678 FPTDR Signal Line Failure
P1681 A/T FI Signal A Low Input
P1682 A/T FI Signal A High Input
P1686 A/T FI Signal B Low Input
P1687 A/T FI Signal B High Input

Acura Trouble Codes 1700-1799

P1705 Automatic Transaxle System Malfunction
P1706 Automatic Transaxle System Malfunction
P1709 Automatic Transaxle System Malfunction
P1710 Automatic Transaxle System Malfunction
P1713 Automatic Transaxle System Malfunction
P1738 Automatic Transaxle System Malfunction
P1739 Automatic Transaxle System Malfunction
P1740 Automatic Transaxle System Malfunction
P1753 Automatic Transaxle System Malfunction
P1758 Automatic Transaxle System Malfunction
P1768 Automatic Transaxle System Malfunction
P1773 Automatic Transaxle System Malfunction
P1778 Automatic Transaxle System Malfunction
P1786 Automatic Transaxle System Malfunction
P1790 Automatic Transaxle System Malfunction
P1791 Automatic Transaxle System Malfunction
P1792 Automatic Transaxle System Malfunction
P1794 Automatic Transaxle System Malfunction

Audi Specific Trouble Codes

Audi Trouble Codes – Quick Reference

1100-1199 – 1200-1299 – 1300-1399 – 1400-1499 – 1500-1599 – 1600-1699 – 1700-1799 – 1800-1899

Audi Trouble Codes 1100-1199

P1101 O2 Sensor Circ., Bank 1-Sensor1Voltage too Low/Air Leak
P1102 O2 Sensor Heating Circ., Bank 1-Sensor1 Short to B+
P1103 O2 Sensor Heating Circ., Bank 1-Sensor1 Output too Low
P1104 Bank 1-Sensor2 Voltage too Low/Air Leak
P1105 O2 Sensor Heating Circ., Bank 1-Sensor2 Short to B+
P1106 O2 Sensor Circ., Bank 2-Sensor1 Voltage too Low/Air Leak
P1107 O2 Sensor Heating Circ., Bank 2-Sensor1 Short to B+
P1108 O2 Sensor Heating Circ., Bank 2-Sensor1 Output too Low
P1109 O2 Sensor Circ., Bank 2-Sensor2 Voltage too Low/Air Leak
P1110 O2 Sensor Heating Circ., Bank 2-Sensor2 Short to B+
P1111 O2 Control (Bank 1) System too lean
P1112 O2 Control (Bank 1) System too rich
P1113 Bank 1-Sensor1 Internal Resistance too High
P1114 Bank 1-Sensor2 Internal Resistant too High
P1115 O2 Sensor Heater Circ., Bank 1-Sensor1 Short to Ground
P1116 O2 Sensor Heater Circ., Bank 1-Sensor1 Open
P1117 O2 Sensor Heater Circ., Bank 1-Sensor2 Short to Ground
P1118 O2 Sensor Heater Circ., Bank 1-Sensor2 Open
P1119 O2 Sensor Heater Circ., Bank 2-Sensor1 Short to Ground
P1120 O2 Sensor Heater Circ., Bank 2-Sensor1 Open
P1121 O2 Sensor Heater Circ., Bank 2-Sensor2 Short to Ground
P1122 O2 Sensor Heater Circ., Bank 2-Sensor2 Open
P1123 Long Term Fuel Trim Add.Air.,Bank 1 System too Rich
P1124 Long Term Fuel Trim Add.Air.,Bank 1 System too Lean
P1125 Long Term Fuel Trim Add.Air.,Bank 2 System too Rich
P1126 Long Term Fuel Trim Add.Air.,Bank 2 System too Lean
P1127 Long Term Fuel Trim mult.,Bank 1 System too Rich
P1128 Long Term Fuel Trim mult.,Bank 1 System too Lean
P1129 Long Term Fuel Trim mult.,Bank 2 System too Rich
P1130 Long Term Fuel Trim mult.,Bank 2 System too Lean
P1131 Bank 2-Sensor1 Internal Rsistance too High
P1132 O2 Sensor Heating Circ., Bank 1+2-Sensor1 Short to B+
P1133 O2 Sensor Heating Circ., Bank 1+2-Sensor1 Electrical Malfunction
P1134 O2 Sensor Heating Circ., Bank 1+2-Sensor2 Short to B+
P1135 O2 Sensor Heating Circ., Bank 1+2-Sensor2 Electrical Malfunction
P1136 Long Term Fuel Trim Add.Fuel,Bank 1 System too Lean
P1137 Long Term Fuel Trim Add.Fuel,Bank 1 System too Rich
P1138 Long Term Fuel Trim Add.Fuel,Bank 2 System too Lean
P1139 Long Term Fuel Trim Add.Fuel,Bank 2 System too Rich
P1140 Bank 2-Sensor2 Internal Resistance too High
P1141 Load Calculation Cross Check Range/Performance
P1142 Load Calculation Cross Check Lower Limit Exceeded
P1143 Load Calculation Cross Check Upper Limit Exceeded
P1144 Mass or Volume Air Flow Circ Open/Short to Ground
P1145 Mass or Volume Air Flow Circ Short to B+
P1146 Mass or Volume Air Flow Circ Supply Malfunction
P1147 O2 Control (Bank 2) System too lean
P1148 O2 Control (Bank 2) System too rich
P1149 O2 Control (Bank 1) Out of range
P1150 O2 Control (Bank 2) Out of range
P1151 Bank 1, Long Term Fuel Trim, Range 1 Leanness Lower Limit Exceeded
P1152 Bank 1, Long Term Fuel Trim, Range 2 Leanness Lower Limit Exceeded
P1154 Manifold Switch Over Malfunction
P1155 Manifold Abs.Pressure Sensor Circ. Short to B+
P1156 Manifold Abs.Pressure Sensor Circ. Open/Short to Ground
P1157 Manifold Abs.Pressure Sensor Circ. Power Supply Malfunction
P1158 Manifold Abs.Pressure Sensor Circ. Range/Performance
P1160 Manifold Temp.Sensor Circ. Short to Ground
P1161 Manifold Temp.Sensor Circ. Open/Short to B+
P1162 Fuel Temp.Sensor Circ. Short to Ground
P1163 Fuel Temp.Sensor Circ. Open/Short to B+
P1164 Fuel Temperature Sensor Range/Performance/Incorrect Signal
P1165 Bank 1, Long Term Fuel Trim, Range 1 Rich Limit Exceeded
P1166 Bank 1, Long Term Fuel Trim, Range 2 Rich Limit Exceeded
P1171 Throttle Actuation Potentiometer Sign.2 Range/Performance
P1172 Throttle Actuation Potentiometer Sign.2 Signal too Low
P1173 Throttle Actuation Potentiometer Sign.2 Signal too High
P1174 Fuel Trim, Bank 1 Different injection times
P1176 O2 Correction Behind Catalyst,B1 Limit Attained
P1177 O2 Correction Behind Catalyst,B2 Limit Attained
P1178 Linear 02 Sensor / Pump Current Open Circuit
P1179 Linear 02 Sensor / Pump Current Short to ground
P1180 Linear 02 Sensor / Pump Current Short to B+
P1181 Linear 02 Sensor / Reference Voltage Open Circuit
P1182 Linear 02 Sensor / Reference Voltage Short to ground
P1183 Linear 02 Sensor / Reference Voltage Short to B+
P1184 Linear 02 Sensor / Common Ground Wire Open Circuit
P1185 Linear 02 Sensor / Common Ground Wire Short to ground
P1186 Linear 02 Sensor / Common Ground Wire Short to B+
P1187 Linear 02 Sensor / Compens. Resistor Open Circuit
P1188 Linear 02 Sensor / Compens. Resistor Short to ground
P1189 Linear 02 Sensor / Compens. Resistor Short to B+
P1190 Linear 02 Sensor / Reference Voltage Incorrect Signal
P1196 O2 Sensor Heater Circ., Bank 1-Sensor1 Electrical Malfunction
P1197 O2 Sensor Heater Circ., Bank 2-Sensor1 Electrical Malfunction
P1198 O2 Sensor Heater Circ., Bank 1-Sensor2 Electrical Malfunction
P1199 O2 Sensor Heater Circ., Bank 2-Sensor2 Electrical Malfunction

Audi Trouble Codes 1200-1299

P1201 Cyl.1-Fuel Inj.Circ. Electrical Malfunction
P1202 Cyl.2-Fuel Inj.Circ. Electrical Malfunction
P1203 Cyl.3-Fuel Inj.Circ. Electrical Malfunction
P1204 Cyl.4-Fuel Inj.Circ. Electrical Malfunction
P1205 Cyl.5-Fuel Inj.Circ. Electrical Malfunction
P1206 Cyl.6-Fuel Inj.Circ. Electrical Malfunction
P1207 Cyl.7-Fuel Inj.Circ. Electrical Malfunction
P1208 Cyl.8-Fuel Inj.Circ. Electrical Malfunction
P1209 Intake valves for cylinder shut-off Short circuit to ground
P1210 Intake valves for cylinder shut-off Short to B+
P1211 Intake valves for cylinder shut-off Open circuit
P1213 Cyl.1-Fuel Inj.Circ. Short to B+
P1214 Cyl.2-Fuel Inj.Circ. Short to B+
P1215 Cyl.3-Fuel Inj.Circ. Short to B+
P1216 Cyl.4-Fuel Inj.Circ. Short to B+
P1217 Cyl.5-Fuel Inj.Circ. Short to B+
P1218 Cyl.6-Fuel Inj.Circ. Short to B+
P1219 Cyl.7-Fuel Inj.Circ. Short to B+
P1220 Cyl.8-Fuel Inj.Circ. Short to B+
P1221 Cylinder shut-off exhaust valves Short circuit to ground
P1222 Cylinder shut-off exhaust valves Short to B+
P1223 Cylinder shut-off exhaust valves Open circuit
P1225 Cyl.1-Fuel Inj.Circ. Short to Ground
P1226 Cyl.2-Fuel Inj.Circ. Short to Ground
P1227 Cyl.3-Fuel Inj.Circ. Short to Ground
P1228 Cyl.4-Fuel Inj.Circ. Short to Ground
P1229 Cyl.5-Fuel Inj.Circ. Short to Ground
P1230 Cyl.6-Fuel Inj.Circ. Short to Ground
P1231 Cyl.7-Fuel Inj.Circ. Short to Ground
P1232 Cyl.8-Fuel Inj.Circ. Short to Ground
P1237 Cyl.1-Fuel Inj.Circ. Open Circ.
P1238 Cyl.2-Fuel Inj.Circ. Open Circ.
P1239 Cyl.3-Fuel Inj.Circ. Open Circ.
P1240 Cyl.4-Fuel Inj.Circ. Open Circ.
P1241 Cyl.5-Fuel Inj.Circ. Open Circ.
P1242 Cyl.6-Fuel Inj.Circ. Open Circ.
P1243 Cyl.7-Fuel Inj.Circ. Open Circ.
P1244 Cyl.8-Fuel Inj.Circ. Open Circ.
P1245 Needle Lift Sensor Circ. Short to Ground
P1246 Needle Lift Sensor Circ. Range/Performance
P1247 Needle Lift Sensor Circ. Open/Short to B+
P1248 Injection Start Control Deviation
P1249 Fuel consumption signal Electrical Fault in Circuit
P1250 Fuel Level Too Low
P1251 Start of Injection Solenoid Circ Short to B+
P1252 Start of Injection Solenoid Circ Open/Short to Ground
P1253 Fuel consumption signal Short to ground
P1254 Fuel consumption signal Short to B+
P1255 Engine Coolant Temp.Circ Short to Ground
P1256 Engine Coolant Temp.Circ Open/Short to B+
P1257 Engine Coolant System Valve Open
P1258 Engine Coolant System Valve Short to B+
P1259 Engine Coolant System Valve Short to Ground
P1280 Fuel Inj.Air Contr.Valve Circ. Flow too Low
P1283 Fuel Inj.Air Contr.Valve Circ. Electrical Malfunction
P1284 Fuel Inj.Air Contr.Valve Circ. Open
P1285 Fuel Inj.Air Contr.Valve Circ. Short to Ground
P1286 Fuel Inj.Air Contr.Valve Circ. Short to B+
P1287 Turbocharger bypass valve open
P1288 Turbocharger bypass valve short to B+
P1289 Turbocharger bypass valve short to ground
P1296 Cooling system malfunction
P1297 Connection turbocharger – throttle valve pressure hose

Audi Trouble Codes 1300-1399

P1300 Misfire detected Reason: Fuel level too low
P1319 Knock Sensor 1 Circ. Short to Ground
P1320 Knock Sensor 2 Circ. Short to Ground
P1321 Knock Sensor 3 Circ. Low Input
P1322 Knock Sensor 3 Circ. High Input
P1323 Knock Sensor 4 Circ. Low Input
P1324 Knock Sensor 4 Circ. High Input
P1325 Cyl.1-Knock Contr. Limit Attained
P1326 Cyl.2-Knock Contr. Limit Attained
P1327 Cyl.3-Knock Contr. Limit Attained
P1328 Cyl.4-Knock Contr. Limit Attained
P1329 Cyl.5-Knock Contr. Limit Attained
P1330 Cyl.6-Knock Contr. Limit Attained
P1331 Cyl.7-Knock Contr. Limit Attained
P1332 Cyl.8-Knock Contr. Limit Attained
P1335 Engine Torque Monitoring 2 Control Limint Exceeded
P1336 Engine Torque Monitoring Adaptation at limit
P1337 Camshaft Pos.Sensor,Bank 1 Short to Ground
P1338 Camshaft Pos.Sensor,Bank 1 Open Circ./Short to B+
P1339 Crankshaft Pos./Engine Speed Sensor Cross Connected
P1340 Crankshaft-/Camshaft Pos.Sens.Signals Out of Sequence
P1341 Ignition Coil Power Output Stage 1 Short to Ground
P1342 Ignition Coil Power Output Stage 1 Short to B+
P1343 Ignition Coil Power Output Stage 2 Short to Ground
P1344 Ignition Coil Power Output Stage 2 Short to B+
P1345 Ignition Coil Power Output Stage 3 Short to Ground
P1346 Ignition Coil Power Output Stage 3 Short to B+
P1347 Bank 2,Crankshaft-/Camshaft os.Sens.Sign. Out of Sequence
P1348 Ignition Coil Power Output Stage 1 Open Circuit
P1349 Ignition Coil Power Output Stage 2 Open Circuit
P1350 Ignition Coil Power Output Stage 3 Open Circuit
P1354 Modulation Piston Displ.Sensor Circ. Malfunction
P1355 Cyl. 1, ignition circuit Open Circuit
P1356 Cyl. 1, ignition circuit Short to B+
P1357 Cyl. 1, ignition circuit Short to ground
P1358 Cyl. 2, ignition circuit Open Circuit
P1359 Cyl. 2, ignition circuit Short Circuit to B+
P1360 Cyl. 2, ignition circuit Short Circuit to Ground
P1361 Cyl. 3, ignition circuit Open Circuit
P1362 Cyl. 3, ignition circuit Short Circuit to B+
P1363 Cyl. 3, ignition circuit Short Circuit to ground
P1364 Cyl. 4 ignition circuit Open Circuit
P1365 Cyl. 4 ignition circuit Short circuit to B+
P1366 Cyl. 4 ignition circuit Short circuit to ground
P1367 Cyl. 5, ignition circuit Open Circuit
P1368 Cyl. 5, ignition circuit Short Circuit to B+
P1369 Cyl. 5, ignition circuit short to ground
P1370 Cyl. 6, ignition circuit Open Circuit
P1371 Cyl. 6, ignition circuit Short Circuit to B+
P1372 Cyl. 6, ignition circuit short to ground
P1373 Cyl. 7, ignition circuit Open Circuit
P1374 Cyl. 7, ignition circuit Short Circuit to B+
P1375 Cyl. 7, ignition circuit short to ground
P1376 Cyl. 8, ignition circuit Open Circuit
P1377 Cyl. 8, ignition circuit Short Circuit to B+
P1378 Cyl. 8, ignition circuit short to ground
P1386 Internal Control Module Knock Control Circ.Error
P1387 Internal Contr. Module altitude sensor error
P1388 Internal Contr. Module drive by wire error
P1391 Camshaft Pos.Sensor,Bank 2 Short to Ground
P1392 Camshaft Pos.Sensor,Bank 2 Open Circ./Short to B+
P1393 Ignition Coil Power Output Stage 1 Electrical Malfunction
P1394 Ignition Coil Power Output Stage 2 Electrical Malfunction
P1395 Ignition Coil Power Output Stage 3 Electrical Malfunction
P1396 Engine Speed Sensor Missing Tooth
P1397 Engine speed wheel Adaptation limit reached
P1398 Engine RPM signal, TD Short to ground
P1399 Engine RPM signal, TD Short Circuit to B+

Audi Trouble Codes 1400-1499

P1400 EGR Valve Circ Electrical Malfunction
P1401 EGR Valve Circ Short to Ground
P1402 EGR Valve Circ Short to B+
P1403 EGR Flow Deviation
P1404 EGR Flow Basic Setting not carried out
P1406 EGR Temp.Sensor Range/Performance
P1407 EGR Temp.Sensor Signal too Low
P1408 EGR Temp.Sensor Signal too High
P1409 Tank Ventilation Valve Circ. Electrical Malfunction
P1410 Tank Ventilation Valve Circ. Short to B+
P1411 Sec.Air Inj.Sys.,Bank 2 Flow too Flow
P1412 EGR Different.Pressure Sensor Signal too Low
P1413 EGR Different.Pressure Sensor Signal too High
P1414 Sec.Air Inj.Sys.,Bank 2 Leak Detected
P1417 Fuel Level Sensor Circ Signal too Low
P1418 Fuel Level Sensor Circ Signal too High
P1420 Sec.Air Inj.Valve Circ Electrical Malfunction
P1421 Sec.Air Inj.Valve Circ Short to Ground
P1422 Sec.Air Inj.Sys.Contr.Valve Circ Short to B+
P1423 Sec.Air Inj.Sys.,Bank 1 Flow too Low
P1424 Sec.Air Inj.Sys.,Bank 1 Leak Detected
P1425 Tank Vent.Valve Short to Ground
P1426 Tank Vent.Valve Open
P1432 Sec.Air Inj.Valve Open
P1433 Sec.Air Inj.Sys.Pump Relay Circ. open
P1434 Sec.Air Inj.Sys.Pump Relay Circ. Short to B+
P1435 Sec.Air Inj.Sys.Pump Relay Circ. Short to ground
P1436 Sec.Air Inj.Sys.Pump Relay Circ. Electrical Malfunction
P1439 EGR Potentiometer Error in Basic Seting
P1440 EGR Valve Power Stage Open
P1441 EGR Valve Circ Open/Short to Ground
P1442 EGR Valve Position Sensor Signal too high
P1443 EGR Valve Position Sensor Signal too low
P1444 EGR Valve Position Sensor range/performance
P1445 Catalyst Temp.Sensor 2 Circ. Range/Performance
P1446 Catalyst Temp.Circ Short to Ground
P1447 Catalyst Temp.Circ Open/Short to B+
P1448 Catalyst Temp.Sensor 2 Circ. Short to Ground
P1449 Catalyst Temp.Sensor 2 Circ. Open/Short to B+
P1450 Sec.Air Inj.Sys.Circ Short to B+
P1451 Sec.Air Inj.Sys.Circ Short to Ground
P1452 Sec.Air Inj.Sys. Open Circ.
P1453 Exhaust gas temperature sensor 1 open/short to B+
P1454 Exhaust gas temperature sensor short 1 to ground
P1455 Exhaust gas temperature sensor 1 range/performance
P1456 Exhaust gas temperature control bank 1 limit attained
P1457 Exhaust gas temperature sensor 2 open/short to B+
P1458 Exhaust gas temperature sensor 2 short to ground
P1459 Exhaust gas temperature sensor 2 range/performance
P1460 Exhaust gas temperature control bank 2 limit attained
P1461 Exhaust gas temperature control bank 1 Range/Performance
P1462 Exhaust gas temperature control bank 2 Range/Performance
P1465 Additive Pump Short Circuit to B+
P1466 Additive Pump Open/Short to Ground
P1467 EVAP Canister Purge Solenoid Valve Short Circuit to B+
P1468 EVAP Canister Purge Solenoid Valve Short Circuit to Ground
P1469 EVAP Canister Purge Solenoid Valve Open Circuit
P1470 EVAP Emission Contr.LDP Circ Electrical Malfunction
P1471 EVAP Emission Contr.LDP Circ Short to B+
P1472 EVAP Emission Contr.LDP Circ Short to Ground
P1473 EVAP Emission Contr.LDP Circ Open Circ.
P1474 EVAP Canister Purge Solenoid Valve electrical malfunction
P1475 EVAP Emission Contr.LDP Circ Malfunction/Signal Circ.Open
P1476 EVAP Emission Contr.LDP Circ Malfunction/Insufficient Vacuum
P1477 EVAP Emission Contr.LDP Circ Malfunction
P1478 EVAP Emission Contr.LDP Circ Clamped Tube Detected

Audi Trouble Codes 1500-1599

P1500 Fuel Pump Relay Circ. Electrical Malfunction
P1501 Fuel Pump Relay Circ. Short to Ground
P1502 Fuel Pump Relay Circ. Short to B+
P1503 Load signal from Alternator Term. DF Range/performance/Incorrect Signal
P1504 Intake Air Sys.Bypass Leak Detected
P1505 Closed Throttle Pos. Does Not Close/Open Circ
P1506 Closed Throttle Pos.Switch Does Not Open/Short to Ground
P1507 Idle Sys.Learned Value Lower Limit Attained
P1508 Idle Sys.Learned Value Upper Limit Attained
P1509 Idle Air Control Circ. Electrical Malfunction
P1510 Idle Air Control Circ. Short to B+
P1511 Intake Manifold Changeover Valve circuit electrical malfunction
P1512 Intake Manifold Changeover Valve circuit Short to B+
P1513 Intake Manifold Changeover Valve2 circuit Short to B+
P1514 Intake Manifold Changeover Valve2 circuit Short to ground
P1515 Intake Manifold Changeover Valve circuit Short to Ground
P1516 Intake Manifold Changeover Valve circuit Open
P1517 Main Relay Circ. Electrical Malfunction
P1518 Main Relay Circ. Short to B+
P1519 Intake Camshaft Contr.,Bank 1 Malfunction
P1520 Intake Manifold Changeover Valve2 circuit Open
P1521 Intake Manifold Changeover Valve2 circuit electrical malfunction
P1522 Intake Camshaft Contr.,Bank 2 Malfunction
P1523 Crash Signal from Airbag Control Unit range/performance
P1525 Intake Camshaft Contr. Circ., Bank 1 Electrical Malfunction
P1526 Intake Camshaft Contr. Circ., Bank 1 Short to B+
P1527 Intake Camshaft Contr. Circ., Bank 1 Short to Ground
P1528 Intake Camshaft Contr. Circ., Bank 1 Open
P1529 Camshaft Control Circuit Short to B+
P1530 Camshaft Control Circuit Short to ground
P1531 Camshaft Control Circuit open
P1533 Intake Camshaft Contr. Circ., Bank 2 Electrical Malfunction
P1534 Intake Camshaft Contr. Circ., Bank 2 Short to B+
P1535 Intake Camshaft Contr. Circ., Bank 2 Short to Ground
P1536 Intake Camshaft Contr. Circ., Bank 2 Open
P1537 Engine Shutoff Solenoid Malfunction
P1538 Engine Shutoff Solenoid Open/Short to Ground
P1539 Clutch Vacuum Vent Valve Switch Incorrect signal
P1540 Vehicle Speed Sensor High Input
P1541 Fuel Pump Relay Circ Open
P1542 Throttle Actuation Potentiometer Range/Performance
P1543 Throttle Actuation Potentiometer Signal too Low
P1544 Throttle Actuation Potentiometer Signal too High
P1545 Throttle Pos.Contr Malfunction
P1546 Boost Pressure Contr.Valve Short to B+
P1547 Boost Pressure Contr.Valve Short to Ground
P1548 Boost Pressure Contr.Valve Open
P1549 Boost Pressure Contr.Valve Short to Ground
P1550 Charge Pressure Deviation
P1551 Barometric Pressure Sensor Circ. Short to B+
P1552 Barometric Pressure Sensor Circ. Open/Short to Ground
P1553 Barometric/manifold pressure signal ratio out of range
P1554 Idle Speed Contr.Throttle Pos. Basic Setting Conditions not met
P1555 Charge Pressure Upper Limit exceeded
P1556 Charge Pressure Contr. Negative Deviation
P1557 Charge Pressure Contr. Positive Deviation
P1558 Throttle Actuator Electrical Malfunction
P1559 Idle Speed Contr.Throttle Pos. Adaptation Malfunction
P1560 Maximum Engine Speed Exceeded
P1561 Quantity Adjuster Deviation
P1562 Quantity Adjuster Upper Limit Attained
P1563 Quantity Adjuster Lower Limit Attained
P1564 Idle Speed Contr.Throttle Pos. Low Voltage During Adaptation
P1565 Idle Speed Control Throttle Position lower limit not attained
P1566 Load signal from A/C compressor range/performance
P1567 Load signal from A/C compressor no signal
P1568 Idle Speed Contr.Throttle Pos. mechanical Malfunction
P1569 Cruise control switch Incorrect signal
P1570 Contr.Module Locked
P1571 Left Eng. Mount Solenoid Valve Short to B+
P1572 Left Eng. Mount Solenoid Valve Short to ground
P1573 Left Eng. Mount Solenoid Valve Open circuit
P1574 Left Eng. Mount Solenoid Valve Electrical fault in circuit
P1575 Right Eng. Mount Solenoid Valve Short to B+
P1576 Right Eng. Mount Solenoid Valve Short to ground
P1577 Right Eng. Mount Solenoid Valve Open circuit
P1578 Right Eng. Mount Solenoid Valve Electrical fault in circuit
P1579 Idle Speed Contr.Throttle Pos. Adaptation not started
P1580 Throttle Actuator B1 Malfunction
P1581 Idle Speed Contr.Throttle Pos. Basic Setting Not Carried Out
P1582 Idle Adaptation at Limit
P1583 Transmission mount valves Short to B+
P1584 Transmission mount valves Short to ground
P1585 Transmission mount valves Open circuit
P1586 Engine mount solenoid valves Short to B+
P1587 Engine mount solenoid valves Short to ground
P1588 Engine mount solenoid valves Open circuit

Audi Trouble Codes 1600-1699

P1600 Power Supply (B+) Terminal 15 Low Voltage
P1602 Power Supply (B+) Terminal 30 Low Voltage
P1603 Internal Control Module Malfunction
P1604 Internal Control Module Driver Error
P1605 Rough Road/Acceleration Sensor Electrical Malfunction
P1606 Rough Road Spec Engine Torque ABS-ECU Electrical Malfunction
P1607 Vehicle speed signal Error message from instrument cluster
P1608 Steering angle signal Error message from steering angle sensor
P1609 Crash shut-down activated
P1611 MIL Call-up Circ./Transm.Contr.Module Short to Ground
P1612 Electronic Control Module Incorrect Coding
P1613 MIL Call-up Circ Open/Short to B+
P1614 MIL Call-up Circ./Transm.Contr.Module Range/Performance
P1615 Engine Oil Temperature Sensor Circuit range/performance
P1616 Glow Plug/Heater Indicator Circ. Short to B+
P1617 Glow Plug/Heater Indicator Circ. Open/Short to Ground
P1618 Glow Plug/Heater Relay Circ. Short to B+
P1619 Glow Plug/Heater Relay Circ. Open/Short to Ground
P1620 Engine coolant temperature signal open/short to B+
P1621 Engine coolant temperature signal short to ground
P1622 Engine coolant temperature signal range/performance
P1623 Data Bus Powertrain No Communication
P1624 MIL Request Sign.active
P1625 Data-Bus Powertrain Unplausible Message from Transm.Contr.
P1626 Data-Bus Powertrain Missing Message from Transm.Contr.
P1627 Data-Bus Powertrain missing message from fuel injection pump
P1628 Data-Bus Powertrain missing message from steering sensor
P1629 Data-Bus Powertrain missing message from distance control
P1630 Accelera.Pedal Pos.Sensor 1 Signal too Low
P1631 Accelera.Pedal Pos.Sensor 1 Signal too High
P1632 Accelera.Pedal Pos.Sensor 1 Power Supply Malfunction
P1633 Accelera.Pedal Pos.Sensor 2 Signal too Low
P1634 Accelera.Pedal Pos.Sensor 2 Signal too High
P1635 Data Bus Powertrain missing message f.air condition control
P1636 Data Bus Powertrain missing message from Airbag control
P1637 Data Bus Powertrain missing message f.central electr.control
P1638 Data Bus Powertrain missing message from clutch control
P1639 Accelera.Pedal Pos.Sensor 1+2 Range/Performance
P1640 Internal Contr.Module (EEPROM) Error
P1641 Please check DTC Memory of Air Condition ECU
P1642 Please check DTC Memory of Airbag ECU
P1643 Please check DTC Memory of central electric ECU
P1644 Please check DTC Memory of clutch ECU
P1645 Data Bus Powertrain missing message f.all wheel drive contr.
P1646 Please Check DTC Memory of all wheel drive ECU
P1647 Please check coding of ECUs in Data Bus Powertrain
P1648 Data Bus Powertrain Malfunction
P1649 Data Bus Powertrain Missing message from ABS Control Module
P1650 Data Bus Powertrain Missing message fr.instrument panel ECU
P1651 Data Bus Powertrain missing messages
P1652 Please check DTC Memory of transmission ECU
P1653 Please check DTC Memory of ABS Control Module
P1654 Please check DTC Memory of control panel ECU
P1655 Please check DTC Memory of ADR Control Module
P1656 A/C clutch relay circuit short to ground
P1657 A/C clutch relay circuit short to B+
P1658 Data Bus Powertrain Incorrect signal from ADR Control Module
P1676 Drive by Wire-MIL Circ. Electrical Malfunction
P1677 Drive by Wire-MIL Circ. Short to B+
P1678 Drive by Wire-MIL Circ. Short to Ground
P1679 Drive by Wire-MIL Circ. Open
P1681 Contr.Unit Programming, Programming not Finished
P1684 Contr.Unit Programming Communication Error
P1686 Contr.Unit Error Programming Error
P1690 Malfunction Indication Light Malfunction
P1691 Malfunction Indication Light Open
P1692 Malfunction Indication Light Short to Ground
P1693 Malfunction Indication Light Short to B+
P1694 Malfunction Indication Light Open/Short to Ground

Audi Trouble Codes 1700-1799

P1704 Kick Down Switch Malfunction
P1705 Gear/Ratio Monitoring Adaptation limit reached
P1711 Wheel Speed Signal 1 Range/Performance
P1716 Wheel Speed Signal 2 Range/Performance
P1721 Wheel Speed Signal 3 Range/Performance
P1723 Starter Interlock Circ. Open
P1724 Starter Interlock Circ. Short to Ground
P1726 Wheel Speed Signal 4 Range/Performance
P1728 Different Wheel Speed Signals Range/Performance
P1729 Starter Interlock Circ. Short to B+
P1733 Tiptronic Switch Down Circ. Short to Ground
P1739 Tiptronic Switch up Circ. Short to Ground
P1740 Clutch temperature control
P1741 Clutch pressure adaptation at limit
P1742 Clutch torque adaptation at limit
P1743 Clutch slip control signal too high
P1744 Tiptronic Switch Recognition Circ. Short to Ground
P1745 Transm.Contr.Unit Relay Short to B+
P1746 Transm.Contr.Unit Relay Malfunction
P1747 Transm.Contr.Unit Relay Open/Short to Ground
P1748 Transm.Contr.Unit Self-Check
P1749 Transm.Contr.Unit Incorrect Coded
P1750 Power Supply Voltage Low Voltage
P1751 Power Supply Voltage High Voltage
P1752 Power Supply Malfunction
P1760 Shift Lock Malfunction
P1761 Shift Lock Short to Ground
P1762 Shift Lock Short to B+
P1763 Shift Lock Open
P1764 Transmission temperature control
P1765 Hydraulic Pressure Sensor 2 adaptation at limit
P1766 Throttle Angle Signal Stuck Off
P1767 Throttle Angle Signal Stuck On
P1768 Hydraulic Pressure Sensor 2 Too High
P1769 Hydraulic Pressure Sensor 2 Too Low
P1770 Load Signal Range/Performance
P1771 Load Signal Stuck Off
P1772 Load Signal Stuck On
P1773 Hydraulic Pressure Sensor 1 Too High
P1774 Hydraulic Pressure Sensor 1 Too Low
P1775 Hydraulic Pressure Sensor 1 adaptation at limit
P1776 Hydraulic Pressure Sensor 1 range/performance
P1777 Hydraulic Pressure Sensor 2 range/performance
P1778 Solenoid EV7 Electrical Malfunction
P1781 Engine Torque Reduction Open/Short to Ground
P1782 Engine Torque Reduction Short to B+
P1784 Shift up/down Wire Open/Short to Ground
P1785 Shift up/down Wire Short to B+
P1786 Reversing Light Circ. Open
P1787 Reversing Light Circ. Short to Ground
P1788 Reversing Light Circ. Short to B+
P1789 Idle Speed Intervention Circ. Error Message from Engine Contr.
P1790 Transmission Range Display Circ. Open
P1791 Transmission Range Display Circ. Short to Ground
P1792 Transmission Range Display Circ. Short to B+
P1793 Output Speed Sensor 2 Circ. No Signal
P1795 Vehicle Speed Signal Circ. Open
P1796 Vehicle Speed Signal Circ. Short to Ground
P1797 Vehicle Speed Signal Circ. Short to B+
P1798 Output Speed Sensor 2 Circ. Range/Performance
P1799 Output Speed Sensor 2 Circ. Rpm too High

Audi Trouble Codes 1800-1899

P1813 Pressure Contr.Solenoid 1 Electrical
P1814 Pressure Contr.Solenoid 1 Open/Short to Ground
P1815 Pressure Contr.Solenoid 1 Short to B+
P1818 Pressure Contr.Solenoid 2 Electrical
P1819 Pressure Contr.Solenoid 2 Open/Short to Ground
P1820 Pressure Contr.Solenoid 2 Short to B+
P1823 Pressure Contr.Solenoid 3 Electrical
P1824 Pressure Contr.Solenoid 3 Open/Short to Ground
P1825 Pressure Contr.Solenoid 3 Short to B+
P1828 Pressure Contr.Solenoid 4 Electrical
P1829 Pressure Contr.Solenoid 4 Open/Short to Ground
P1830 Pressure Contr.Solenoid 4 Short to B+
P1834 Pressure Contr.Solenoid 5 Open/Short to Ground
P1835 Pressure Contr.Solenoid 5 Short to B+
P1841 Engine/Transmission Control Modules Versions do not match
P1842 Please check DTC Memory of instrument panel ECU
P1843 Please check DTC Memory of ADR Control Module
P1844 Please check DTC Memory of central electric control ECU
P1847 Please check DTC Memory of brake system ECU
P1848 Please check DTC Memory of engine ECU
P1849 Please check DTC Memory of transmission ECU
P1850 Data-Bus Powertrain Missing Message from Engine Contr.
P1851 Data-Bus Powertrain Missing Message from Brake Contr.
P1852 Data-Bus Powertrain Unplausible Message from Engine Contr.
P1853 Data-Bus Powertrain Unplausible Message from Brake Contr.
P1854 Data-Bus Powertrain Hardware Defective
P1855 Data-Bus Powertrain Software version Contr.
P1856 Throttle/Pedal Pos.Sensor A Circ. Error Message from Engine Contr.
P1857 Load Signal Error Message from Engine Contr.
P1858 Engine Speed Input Circ. Error Message from Engine Contr.
P1859 Brake Switch Circ. Error Message from Engine Contr.
P1860 Kick Down Switch Error Message from Engine Contr.
P1861 Throttle Position (TP) sensor Error Message from ECM
P1862 Data Bus Powertrain Missing message from instr. panel ECU
P1863 Data Bus Powertrain Missing Message from St. Angle Sensor
P1864 Data Bus Powertrain Missing message from ADR control module
P1865 Data Bus Powertrain Missing message from central electronics
P1866 Data Bus Powertrain Missing messages

BMW

BMW Trouble Codes 1000-1099

P1083 Fuel Control Mixture Lean (Bank 1 Sensor 1)
P1084 Fuel Control Mixture Rich (Bank 1 Sensor 1)
P1085 Fuel Control Mixture Lean (Bank 2 Sensor 1)
P1086 Fuel Control Mixture Rich (Bank 2 Sensor 1)
P1087 O2 Sensor Circuit Slow Response in Lean Control Range (Bank 1 Sensor 1)
P1088 O2 Sensor Circuit Slow Response in Rich Control Range (Bank 1 Sensor 1)
P1089 O2 Sensor Circuit Slow Response in Lean Control Range (Bank 1 Sensor 2)
P1090 Pre-Catalyst Fuel Trim Too Lean Bank 1
P1091 Pre-Catalyst Fuel Trim Too Rich Bank 1
P1092 Pre-Catalyst Fuel Trim Too Lean Bank 2
P1093 Pre-Catalyst Fuel Trim Too Rich Bank 2
P1094 O2 Sensor Circuit Slow Response in Rich Control Range (Bank 2 Sensor 1)
P1095 O2 Sensor Circuit Slow Switching From Lean to Rich (Bank 1 Sensor 1)
P1096 O2 Sensor Circuit Slow Switching From Lean to Rich (Bank 2 Sensor 1)
P1097 O2 Sensor Circuit Slow Response after Coast Down Fuel Cutoff (Bank 1 Sensor 1)
P1098 O2 Sensor Circuit Slow Response after Coast Down Fuel Cutoff (Bank 2 Sensor 2)

BMW Trouble Codes 1100-1199

P1111 Engine Coolant Temperature Radiator Outlet Sensor Low Input
P1112 Engine Coolant Temperature Radiator Outlet Sensor High Input
P1115 Coolant Temperature Sensor Plausibility
P1116 Mass Or Volume Air Flow Circuit Range/Performance Problem (Bank 2)
P1117 Mass Or Volume Air Flow Circuit Low Input (Bank 2)
P1118 Mass Or Volume Air Flow Circuit High Input (Bank 2)
P1120 Pedal Position Sensor Circuit
P1121 Pedal Position 1 Range/Performance Problem
P1122 Pedal Position 1 Low Input
P1123 Pedal Position 1 High Input
P1132 O2 Sensor Heater Control Circuit (Bank 1 Sensor 1)
P1133 O2 Sensor Heater Control Circuit (Bank 2 Sensor 1)
P1134 O2 Sensor Heater Circuit Signal Intermittent (Bank 1 Sensor 2)
P1135 O2 Sensor Heater Circuit Low Voltage (Bank 1 Sensor 1)
P1136 O2 Sensor Heater Circuit High Voltage (Bank 1 Sensor 1)
P1137 O2 Sensor Heater Circuit Signal Intermittant (Bank 1 Sensor 2)
P1138 O2 Sensor Heater Circuit Low Voltage (Bank 1 Sensor 2)
P1139 O2 Sensor Heater Circuit High Voltage (Bank 1 Sensor 2)
P1140 Mass or Volume Air Flow Circuit Range/Performance Problem
P1145 Solenoid Valve Running Losses Control Circuit Electrical
P1151 O2 Sensor Heater Circuit Signal Intermittent (Bank 2 Sensor 1)
P1152 O2 Sensor Heater Circuit Low Voltage (Bank 2 Sensor 1)
P1153 O2 Sensor Heater Circuit High Voltage (Bank 2 Sensor 1)
P1155 O2 Sensor Heater Circuit Intermittent (Bank 2 Sensor 2)
P1156 O2 Sensor Heater Circuit Low Voltage (Bank 2 Sensor 2)
P1157 O2 Sensor Heater Circuit High Voltage (Bank 2 Sensor 2)
P1158 Fuel Trim Adaptive Bank 1 Low
P1159 Fuel Trim Adaptive Bank 1 High
P1160 Fuel Trim Adaptive Bank 2 Low
P1161 Fuel Trim Adaptive Bank 2 High
P1162 Fuel Trim Adaptive Per Ignition Bank 1 Low
P1163 Fuel Trim Adaptive Per Ignition Bank 1 High
P1164 Fuel Trim Adaptive Per Ignition Bank 2 Low
P1165 Fuel Trim Adaptive Per Ignition Bank 2 High
P1174 Fuel Trim Adaptation Bank 1 Malfunction
P1175 Fuel Trim Adaptation Bank 2 Malfunction
P1176 O2 Sensor Slow Response Bank 1
P1177 O2 Sensor Slow Response Bank 2
P1178 O2 Sensor Signal Circuit Slow Switching From Rich to Lean (Bank 1 Sensor 1)
P1179 O2 Sensor Signal Circuit Slow Switching From Rich to Lean (Bank 2 Sensor 1)
P1180 O2 Sensor Signal Circuit Slow Switching From Rich to Lean (Bank 1 Sensor 2)
P1181 O2 Sensor Signal Circuit Slow Switching From Rich to Lean (Bank 2 Sensor 2)
P1182 O2 Sensor (Bank 1 Sensor 2) Open Circuit During Coast Down Fuel Cut-off
P1183 O2 Sensor (Bank 2 Sensor 2) Open Circuit During Coast Down Fuel Cut-off
P1186 O2 Sensor Heater Control Circuit (Bank 1 Sensor 2)
P1187 O2 Sensor Heater Control Circuit (Bank 2 Sensor 2)
P1188 Fuel Control (Bank 1 Sensor 1)
P1189 Fuel Control (Bank 2 Sensor 1)
P1190 Pre-catalyst Fuel Trim System Bank 1
P1191 Pre-catalyst Fuel Trim System Bank 2
P1192 Post-catalyst Fuel Trim System Bank 1
P1193 Post-catalyst Fuel Trim System Bank 2

BMW Trouble Codes 1200-1299

P1221 Pedal Position Sensor 2 Range/Performance Problem
P1222 Pedal Position Sensor 2 Low Input
P1223 Pedal Position Sensor 2 High Input
P1270 Control Module Self-Test, Torque Monitoring
P1271 Ambient Air Pressure Sensor Electrical
P1283 Switching Solenoid for Air Assisted Injection Valves Bank 1 Control Circuit Electrical
P1284 Switching Solenoid for Air Assisted Injection Valves Bank 1 Control Circuit Signal Low
P1285 Switching Solenoid for Air Assisted Injection Valves Bank 1 Control Circuit Signal High
P1287 Switching Solenoid for Air Assisted Injection Valves Bank 2 Control Circuit Electrical
P1288 Switching Solenoid for Air Assisted Injection Valves Bank 2 Control Circuit Signal Low
P1289 Switching Solenoid for Air Assisted Injection Valves Bank 2 Control Circuit Signal High

BMW Trouble Codes 1300-1399

P1313 “A” Camshaft Position Plausibility
P1317 “B” Camshaft Position Plausibility
P1327 Knock Sensor 2 (Bank 1) Low Input
P1328 Knock Sensor 2 (Bank 1) High Input
P1332 Knock Sensor 4 Low Input
P1333 Knock Sensor 4 High Input
P1340 Multiple Cylinder Misfire During Start
P1341 Multiple Cylinder Misfire With Fuel Cut-off
P1342 Misfire During Start Cylinder 1
P1343 Misfire Cylinder 1 With Fuel Cut-off
P1344 Misfire During Start Cylinder 2
P1345 Misfire Cylinder 2 With Fuel Cut-off
P1346 Misfire During Start Cylinder 3
P1347 Misfire Cylinder 3 With Fuel Cut-off
P1348 Misfire During Start Cylinder 4
P1349 Misfire Cylinder 4 With Fuel Cut-off
P1350 Misfire During Start Cylinder 5
P1351 Misfire Cylinder 5 With Fuel Cut-off
P1352 Misfire During Start Cylinder 6
P1353 Misfire Cylinder 6 With Fuel Cut-off
P1354 Misfire During Start Cylinder 7
P1355 Misfire Cylinder 7 With Fuel Cut-off
P1356 Misfire During Start Cylinder 8
P1357 Misfire Cylinder 8 With Fuel Cut-off
P1358 Misfire During Start Cylinder 9
P1359 Misfire Cylinder 9 With Fuel Cut-off
P1360 Misfire During Start Cylinder 10
P1361 Misfire Cylinder 10 With Fuel Cut-off
P1362 Misfire During Start Cylinder 11
P1363 Misfire Cylinder 11 With Fuel Cut-off
P1364 Misfire During Start Cylinder 12
P1365 Misfire Cylinder 12 With Fuel Cut-off
P1384 Knock Sensor 3 Circuit
P1385 Knock Sensor 4 Circuit
P1386 Control Module Self-test, Knock Control Baseline Test Bank 1
P1396 Crankshaft Position Sensor Segment Timing Plausibility
P1397 Camshaft Position Sensor “B” Circuit (Bank 1)

BMW Trouble Codes 1400-1499

P1400 Heated Catalyst Battery Voltage or Current too Low During Heating (Bank 1)
P1401 Heated Catalyst Current too High During Heating (Bank 1)
P1402 Heated Catalyst Power Switch Overtemperature Condition (Bank 1)
P1403 Carbon Canister Shut Off valve Control Circuit Electrical
P1404 Heated Catalyst Current too High During Heating (Bank 2)
P1405 Heated Catalyst Power Switch Overtemperature Condition (Bank 2)
P1406 Heated Catalyst Internal Control Module Checksum/ROM Error
P1413 Secondary Air Injection Pump Relay Control Circuit Signal Low
P1414 Secondary Air Injection System Monitor Circuit High
P1420 Secondary Air Valve Control Circuit Electrical
P1421 Secondary Air System Bank 1
P1422 Secondary Air System Bank 2
P1432 Secondary Air Injection System Incorrect Flow Detected
P1438 Purge Control Valve Control Open Circuit
P1439 Purge Control Valve Control Circuit Signal Low
P1440 Purge Control Valve Control Circuit Signal High
P1441 Leakage Diagnostic Pump Control Open Circuit
P1442 Leakage Diagnostic Pump Control Circuit Signal Low
P1443 Leakage Diagnostic Pump Control Circuit Signal High
P1444 Diagnostic Module Tank Leakage (DM-TL) Pump Control Open Circuit
P1445 Diagnostic Module Tank Leakage (DM-TL) Pump Control Circuit Signal Low
P1446 Diagnostic Module Tank Leakage (DM-TL) Pump Control Circuit Signal High
P1447 Diagnostic Module Tank Leakage (DM-TL) Pump Too High During Switching
P1448 Diagnostic Module Tank Leakage (DM-TL) Pump Too Low During Switching
P1449 Diagnostic Module Tank Leakage (DM-TL) Pump Too High
P1450 Diagnostic Module Tank Leakage (DM-TL) Switching Solenoid Open Circuit
P1451 Diagnostic Module Tank Leakage (DM-TL) Switching Solenoid Control Circuit Signal Low
P1452 Diagnostic Module Tank Leakage (DM-TL) Switching Solenoid Control Circuit Signal High
P1453 Secondary Air Injection Pump Relay Control Circuit Electrical
P1454 Secondary Air Injection Pump With Series Resistor Control Circuit Electrical
P1456 Heated Catalyst Heater Power Supply Open Circuit (Bank 1)
P1457 Heated Catalyst Heater Power Switch Temperature Sensor Electrical (Bank 1)
P1459 Heated Catalyst Heater Power Supply Open Circuit (Bank 2)
P1460 Heated Catalyst Heater Power Switch Temperature Sensor Electrical (Bank 2)
P1461 Heated Catalyst Gate Voltage Signal Low
P1462 Heated Catalyst Internal Control Module Checksum/ROM Error
P1463 Heated Catalyst Battery Temperature Sensor 1 Electrical
P1464 Heated Catalyst Battery Temperature Sensor 2 Electrical
P1465 Heated Catalyst Battery Temperature Sensor 1 or 2 Plausibility
P1466 Heated Catalyst Power Switch Temperature Sensor Plausibility
P1467 Heated Catalyst Comparison Battery Voltages of Power Switches Plausibility
P1468 Heated Catalyst Battery Disconnecting Switch Plausibility
P1470 Leakage Diagnostic Pump Control Circuit Electrical
P1472 Diagnostic Module Tank leakage (DM-TL) Switching Solenoid Control Circuit Electrical
P1473 Diagnostic Module Tank leakage (DM-TL) Pump Current Plausibility
P1475 Leakage Diagnostic Pump Reed Switch Did Not Close
P1476 Leakage Diagnostic Pump Clamped Tube
P1477 Leakage Diagnostic Pump Reed Switch Did Not Open

BMW Trouble Codes 1500-1599

P1500 Idle Speed Control Valve Stuck Open
P1501 Idle Speed Control Valve Stuck Closed
P1502 Idle Speed Control Valve Closing Solenoid Control Circuit Signal High or Low
P1503 Idle Speed Control Valve Closing Solenoid Control Circuit Signal Low
P1504 Idle Speed Control Valve Closing Solenoid Control Open Circuit
P1505 Idle Speed Control Valve Closing Solenoid Control Circuit Electrial
P1506 Idle Speed Control Valve Open Solenoid Control Circuit Signal High
P1507 Idle Speed Control Valve Open Solenoid Control Circuit Signal Low
P1508 Idle Speed Control Valve Opening Solenoid Control Open Circuit
P1509 Idle Speed Control Valve Opening Solenoid Control Circuit Electrical
P1510 Idle Speed Control Valve Stuck
P1511 DISA Control Circuit Electrical
P1512 DISA Control Circuit Signal Low
P1513 DISA Control Circuit Signal High
P1519 “A” Camshaft Position Actuator Bank 1
P1520 “B” Camshaft Position Actuator Bank 1
P1522 “A” Camshaft Position Actuator Bank 2
P1523 “A” Camshaft Position Actuator Signal Low Bank 1
P1524 “A” Camshaft Position Actuator Signal High Bank 1
P1525 “A” Camshaft Position Actuator Control Open Circuit Bank 1
P1526 “A” Camshaft Position Actuator Control Open Circuit Bank 2
P1527 “A” Camshaft Position Actuator Control Circuit Signal Low Bank 1
P1528 “A” Camshaft Position Actuator Control Circuit Signal High Bank 1
P1529 “B” Camshaft Position Actuator Control Circuit Signal Low Bank 1
P1530 “B” Camshaft Position Actuator Control Circuit Signal High Bank 1
P1531 “B” Camshaft Position Actuator Control Open Circuit Bank 1
P1532 “B” Camshaft Position Actuator Control Open Circuit Bank 2
P1533 “B” Camshaft Position Actuator Control Circuit Signal Low Bank 2
P1534 “B” Camshaft Position Actuator Control Circuit Signal High Bank 2
P1540 Pedal Position Sensor
P1541 Pedal Position Sensor Double Error
P1542 Pedal Position Sensor Electrical
P1543 Pedal Position Sensor
P1544 Pedal Position Sensor
P1545 Pedal Position Sensor
P1546 Pedal Position Sensor
P1550 Idle Speed Control valve Closing Solenoid Control Circuit Electrical
P1551 “A” Camshaft Position Actuator Control Open Circuit Bank 1
P1552 “A” Camshaft Position Actuator Control Open Circuit Bank 1
P1556 “A” Camshaft Position Actuator Control Open Circuit Bank 1
P1560 “B” Camshaft Position Actuator Control Open Circuit Bank 1
P1564 Control Module Selection
P1565 “B” Camshaft Position Actuator Control Open Circuit Bank 1
P1569 “A” Camshaft Position Actuator Control Open Circuit Bank 2
P1580 Throttle Valve Mechanically Stuck
P1581 “B” Camshaft Position Actuator Control Open Circuit Bank 2
P1589 Control Module Self Test, Knock Control Test Pulse Bank 1
P1593 DISA Control Circuit Electrical
P1594 “B” Camshaft Position Actuator Control Open Circuit Bank 2

BMW Trouble Codes 1600-1699

P1602 Control Module Self Test, Control Module Defective
P1603 Control Module Self Test, Torque Monitoring
P1604 Control Module Self Test, Speed Monitoring
P1607 CAN Version
P1608 Serial Communicating Link Control Module
P1609 Serial Communicating Link EML
P1611 Serial Communicating Link Transmission Control Module
P1619 MAP Cooling Control Circuit Signal Low
P1620 MAP Cooling Control Circuit Signal High
P1622 MAP Cooling Control Circuit Electrical
P1623 Pedal Position Sensor Potentiometer Supply
P1624 Pedal Position Sensor Potentiometer Supply Channel 1 Electrical
P1625 Pedal Position Sensor Potentiometer Supply Channel 2 Electrical
P1632 Throttle Valve Adaptation; Adaptation Condition Not Met
P1633 Throttle Valve Adaptation; Limp Home Position
P1634 Throttle Valve Adaptation; Spring Test Failed
P1635 Throttle Valve Adaptation; Lower Mechanical Stop Not Adapted
P1636 Throttle Valve Control Circuit
P1637 Throttle Valve Position Control; Control Deviation
P1638 Throttle Valve Position Control; Throttle Stuck Temporarily
P1639 Throttle Valve Position Control; Throttle Stuck Permanently
P1640 Internal Control Module (ROM/RAM) Error
P1690 Malfunction Indicator Lamp (MIL) Electrical

BMW Trouble Codes 1700-1799

P1734 Pressure Control Solenoid “B” Electrical
P1738 Pressure Control Solenoid “C” Electrical
P1743 Pressure Control Solenoid “E” Electrical
P1744 Pressure Control Solenoid “A” Electrical
P1746 Transmission Control Module Output Stage
P1747 CAN Bus Monitoring
P1748 Transmission Control Module Self Test
P1749 Secondary Pressure Solenoid Communication Error
P1750 Secondary Pressure Solenoid Circuit Range/Performance
P1751 Secondary Pressure Solenoid Open Circuit
P1761 Shift Solenoid Malfunction
P1765 CAN Throttle Valve
P1770 CAN Torque Interface
P1780 CAN Torque Reduction

Dodge – Chrysler – Jeep Specific Trouble Codes

1100-1199

P1192 Inlet Air Temp. Circuit Low
P1193 Inlet Air Temp. Circuit High
P1195 1/1 O2 Sensor Slow During Catalyst Monitor
P1196 2/1 O2 Sensor Slow During Catalyst Monitor
P1197 1/2 O2 Sensor Slow During Catalyst Monitor
P1198 Radiator Temperature Sensor Volts Too High
P1199 Radiator Temperature Sensor Volts Too Low

1200-1299

P1281 Engine Is Cold Too Long
P1282 Fuel Pump Relay Control Circuit
P1283 Idle Select Signal Invalid
P1284 Fuel Injection Pump Battery Voltage Out Of Range
P1285 Fuel Injection Pump Controller Always On
P1286 Accelerator Pedal Position Sensor Supply Voltage Too High
P1287 Fuel Injection Pump Controller Supply Voltage Low
P1288 Intake Manifold Short Runner Solenoid Circuit
P1289 Manifold Tune Valve Solenoid Circuit
P1290 CNG Fuel Pressure Too High
P1291 No Temp Rise Seen From Fuel Heaters
P1292 CNG Pressure Sensor Voltage Too High
P1293 CNG Pressure Sensor Voltage Too Low
P1294 Target Idle Not Reached
P1295 No 5 Volts To TP Sensor
P1296 No 5 Volts To MAP Sensor
P1297 No Change in MAP From Start To Run
P1298 Lean Operation At wide Open Throttle
P1299 Vacuum Leak Found (IAC Fully Seated)

1300-1399

P1388 Auto Shutdown (ASD) Relay Control Circuit
P1389 No Auto Shutdown (ASD) Relay Output Voltage At PCM
P1390 Timing Belt Skipped One Tooth or More
P1391 Intermittent Loss of CMP or CKP
P1398 Mis-Fire Adapter Numerator at Limit
P1399 Wait To Start Lamp Circuit

1400-1499

P1403 No 5 Volts To EGR Sensor
P1475 Aux. 5 Volt Output Too High
P1476 Too Little Secondary Air
P1477 Too Much Secondary Air
P1478 Battery Temp Sensor Volts Out of Limit
P1479 Transmission Fan Relay Circuit
P1480 PCV Solenoid Valve
P1482 Catalyst Temperature Sensor Circuit Shorted Low
P1483 Catalyst Temperature Sensor Circuit Shorted High
P1484 Catalytic Converter Overheat Detected
P1485 Air Injection Solenoid Circuit
P1486 Evap Leak Monitor Pinched Hose
P1487 Hi Speed Rad Fan CTRL Relay Circuit
P1488 Auxiliary 5 Volt Supply Output Too Low
P1489 High Speed Fan CTRL Relay Circuit
P1490 Low Speed Fan CTRL Relay Circuit
P1491 Rad Fan Control Relay Circuit
P1492 Battery Temperature Sensor Voltage Too High
P1493 Battery Temperature Sensor Voltage Too Low
P1494 Leak Detection Pump Switch or Mechanical Fault
P1495 Leak Detection Pump Solenoid Circuit
P1496 5 Volt Supply Output Too Low
P1498 High speed Rad Fan Ground CTRL Rly Circuit

1500-1599

P1594 Charging System Voltage Too High
P1595 Speed Control Solenoid Circuits
P1596 Speed Control Switch Always High
P1597 Speed Control Switch Always Low
P1598 A/C Pressure Sensor Volts Too High
P1599 A/C Pressure Sensor Volts Too Low

1600-1699

P1602 PCM Not Programmed
P1680 Clutch Released Switch Circuit
P1681 No I/P Cluster CCD/J1850 Messages Received
P1682 Charging System Voltage Too Low
P1683 Speed Control Power Relay Or Speed Control 12 Volt Driver Circuit
P1684 Battery Disconnected Within Last 50 Starts
P1685 Skim Invalid Key
P1686 No SKIM Bus Message Received
P1687 No Cluster Bus Message
P1688 Internal Fuel Injection Pump Controller Failure
P1689 No Communication Between ECM & Injection Pump Module
P1690 Fuel injection pump CKP Sensor Does Not Agree With ECM CKP Sensor
P1691 Fuel Injection Pump Controller Calibration Failure
P1693 DTC Detected In ECM Or PCM
P1694 No CCD Messages Received From ECM
P1695 No CCD/J185O Message From BCM
P1696 PCM Failure EEPROM Write Denied
P1697 PCM Failure SRI Mile Not Stored
P1698 No CCD Messages Received From PCM

1700-1799

P1719 Skip Shift Solenoid Circuit
P1740 TCC Or OD Solenoid Performance
P1756 Governor Pressure Not Equal To Target At 15 to 20 PSI
P1757 Governor Pressure Above 3 PSI When Request Is 0 PSI
P1762 Governor Pressure Sensor Offset Improper Voltage
P1763 Governor Pressure Sensor Voltage Too High
P1764 Governor Pressure Sensor Voltage Too Low
P1765 Trans 12 Volt Supply Relay Control Circuit

1800-1899

P1899 Park/Neutral Position Switch Stuck In Park or In Gear

Honda Specific Trouble Codes

Honda Trouble Codes 1100-1199

P1106 Barometric Pressure Circuit Range/Performance
P1107 Barometric Pressure Circuit Low Input
P1108 Barometric Pressure Circuit High Input
P1121 Throttle Position Lower Than Expected
P1122 Throttle Position Higher Than Expected
P1128 MAP Lower Than Expected
P1129 MAP Higher Than Expected
P1149 Primary HO2S (Sensor 1) Circuit Range/Performance Problem
P1162 Primary HO2S (No. 1) Circuit Malfunction
P1163 Primary HO2S (No. 1) Circuit Slow Response
P1164 Primary HO2S (No. 1) Circuit Range/Performance
P1165 Primary HO2S (No. 1) Circuit Range/Performance
P1166 Primary HO2S (No. 1) Heater System Electrical
P1167 Primary HO2S (No. 1) Heater System
P1168 Primary HO2S (No. 1) LABEL Low Input
P1169 Primary HO2S (No. 1) LABEL High Input

Honda Trouble Codes 1200-1299

P1253 VTEC System Malfunction
P1257 VTEC System Malfunction
P1258 VTEC System Malfunction
P1259 VTEC System Malfunction
P1297 Electrical Load Detector Circuit Low Input
P1298 Electrical Load Detector Circuit High Input

Honda Trouble Codes 1300-1399

P1300 Multiple Cylinder Misfire Detected
P1336 CSF Sensor Intermittent Interruption
P1337 CSF Sensor No Signal
P1359 CKP/TDC Sensor Connector Disconnection
P1361 Intermittent Interruption In TDC 1 Sensor Circuit
P1362 No Signal In TDC 1 Sensor Circuit
P1366 Intermittent Interruption In TDC 2 Sensor Circuit
P1367 No Signal In TDC 2 Sensor Circuit
P1381 Cylinder Position Sensor Intermittent Interruption
P1382 Cylinder Position Sensor No Signal

Honda Trouble Codes 1400-1499

P1456 EVAP Emission Control System Leak Detected (Fuel Tank System)
P1457 EVAP Emission Control System Leak Detected (Control Canister System)
P1459 EVAP Emission Purge Flow Switch Malfunction
P1486 Thermostat Range/Performance Problem
P1491 EGR Valve Lift Insufficient Detected
P1498 EGR Valve Lift Sensor High Voltage

Honda Trouble Codes 1500-1599

P1508 IAC Valve Circuit Failure
P1509 IAC Valve Circuit Failure
P1519 Idle Air Control Valve Circuit Failure

Honda Trouble Codes 1600-1699

P1607 ECM/PCM Internal Circuit Failure A
P1655 SEAF/SEFA/TMA/TMB Signal Line Failure
P1656 Automatic Transaxle
P1660 Automatic Transaxle FI Signal A Circuit Failure
P1676 FPTDR Signal Line Failure
P1678 FPTDR Signal Line Failure
P1681 Automatic Transaxle FI Signal A Low Input
P1682 Automatic Transaxle FI Signal A High Input
P1686 Automatic Transaxle FI Signal B Low Input
P1687 Automatic Transaxle FI Signal B High Input

Honda Trouble Codes 1700-1799

P1705 Automatic Transaxle Concerns
P1706 Automatic Transaxle Concerns
P1738 Automatic Transaxle Concerns
P1739 Automatic Transaxle Concerns
P1753 Automatic Transaxle Concerns
P1758 Automatic Transaxle Concerns
P1768 Automatic Transaxle Concerns
P1773 Automatic Transaxle Concerns
P1785 Automatic Transaxle Concerns
P1786 Automatic Transaxle Concerns
P1790 Automatic Transaxle Concerns
P1791 Automatic Transaxle Concerns
P1792 Automatic Transaxle Concerns
P1793 Automatic Transaxle Concerns
P1794 Automatic Transaxle Concerns

Honda Trouble Codes 1800-1899

P1870 Automatic Transaxle Concerns
P1873 Automatic Transaxle Concerns
P1879 Automatic Transaxle Concerns
P1885 Automatic Transaxle Concerns
P1886 Automatic Transaxle Concerns
P1888 Automatic Transaxle Concerns
P1890 Automatic Transaxle Concerns
P1891 Automatic Transaxle Concerns

Hyundai Specific Trouble Codes

Hyundai Trouble Codes 1100-1199

P1100 Manifold Absolute Pressure (MAP) Sensor Malfunction (Open/Short)
P1102 Manifold Absolute Pressure (MAP) Sensor Malfunction – Low Voltage
P1103 Manifold Absolute Pressure (MAP) Sensor Malfunction – High Voltage
P1147 ETS Sub Accel Position Sensor 1 Malfunction
P1151 ETS Main Accel Position Sensor 2 Malfunction
P1155 ETS Limp Home Valve
P1159 Variable Intake Motor Malfunction
P1171 Electronic Throttle System Open
P1172 Electronic Throttle System Motor Current
P1173 Electronic Throttle System Rationality Malfunction
P1174 Electronic Throttle System #1 Close Malfunction
P1175 Electronic Throttle System #2 Close Malfunction
P1176 ETS Motor Open/Short #1
P1176 ETS Motor Open/Short #2
P1178 ETS Motor Battery Voltage Open

Hyundai Trouble Codes 1300-1399

P1330 Spark Timing Adjust Malfunction

Hyundai Trouble Codes 1500-1599

P1521 Power Steering Switch Malfunction

Hyundai Trouble Codes 1600-1699

P1607 Electronic Throttle System Communication Error
P1614 Electronic Throttle System Module Malfunction
P1632 Traction Control System Malfunction

Infiniti Specific Trouble Codes

Infinity Trouble Codes 1100-1199

P1105 MAP/BARO Switch Solenoid Valve
P1110 Intake Valve Timing Control (Left Bank)
P1120 Secondary Throttle Position Sensor (STPS)
P1125 TPS Intermittent
P1130 Swirl Control Valve Control Solenoid Valve
P1135 Intake Valve Timing Control (Right Bank)
P1140 Intake Valve Timing Control Position Sensor (Left Bank)
P1145 Intake Valve Timing Control Position Sensor (Right Bank)
P1148 Closed Loop Control (Bank 1)
P1165 Swirl Control Valve Control Vacuum Check Switch
P1168 Closed Loop Control (Bank 2)

Infinity Trouble Codes 1200-1299

P1210 Traction Control System (TCS) Signal Circuit
P1220 Fuel Pump Control Module (FPCM)

Infinity Trouble Codes 1300-1399

P1320 Ignition Signal, Primary
P1335 Crankshaft Position Sensor (CKPS) (Ref)
P1336 Crankshaft Position Sensor (CKPS) (Cog)

Infinity Trouble Codes 1400-1499

P1400 EGRC Solenoid Valve
P1401 EGR Temperature Sensor
P1402 EGR Function (Open)
P1440 EVAP Control System (Small Leak) (Positive Pressure)
P1441 VC/V Bypass Valve
P1443 Canister Control Vacuum Check Switch
P1444 Canister Purge Volume Control Solenoid Valve
P1445 Purge Volume Control/V
P1446 EVAP Canister Vent Control Valve (Close)
P1447 EVAP Control System Purge Flow Monitoring
P1448 EVAP Canister Vent Control Valve (Open)
P1490 Vacuum Cut Valve Bypass Valve (Circuit)
P1491 Vacuum Cut Valve Bypass Valve
P1492 EVAP Canister Purge Control/Solenoid Valve (Circuit)
P1493 EVAP Canister Purge Control Valve/Solenoid Valve

Infinity Trouble Codes 1600-1699

P1605 A/T Diagnosis Communication Line

Infinity Trouble Codes 1700-1799

P1705 Throttle Position Sensor
P1706 PNP Switch
P1760 Overrun Clutch Solenoid Valve

Infinity Trouble Codes 1900-1999

P1900 Cooling Fan