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. 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, […]

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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 […]

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This is a list of Generic trouble codes. To see manufacturer specific codes, click the name of the manufacturer. Acura Audi BMW Chrysler Dodge Honda Hyundai Infinity Isuzu Jaguar Jeep Kia Land Rover Lexus Mazda Mitsubishi Nissan Plymouth Subaru Toyota Volkswagen

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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 […]

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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 […]

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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 […]

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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 […]

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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. […]

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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 […]

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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 […]

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