Isuzu Specific Trouble Codes

Check engine light p codes are coded according to the system they belong to. Generic codes start with P0. Manufacturer specific codes start with P1, but generally fall into the same guideline as below.

  • P0001 - P0099 - Fuel and Air Metering and Auxiliary Emission Controls
  • P0100 - P0199 - Fuel and Air Metering
  • P0200 - P0299 - Fuel and Air Metering (Injector Circuit)
  • P0300 - P0399 - Ignition System or Misfire
  • P0400 - P0499 - Auxiliary Emissions Controls
  • P0500 - P0599 - Vehicle Speed Controls and Idle Control System
  • P0600 - P0699 - Computer Output Circuit
  • P0700 - P0899 - Transmission

Isuzu Trouble Codes 1100-1199

P1106 MAP Circuit Intermittent Voltage High
P1107 MAP Circuit Intermittent Voltage Low
P1108 Barometric Pressure Circuit Input High
P1111 IAT Sensor Circuit Intermittent Voltage High
P1112 IAT Sensor Circuit Intermittent Voltage Low
P1114 ECT Sensor Circuit Intermittent Voltage Low
P1115 ECT Sensor Circuit Intermittent Voltage High
P1121 TP Sensor Circuit Intermittent Voltage High
P1122 TP Sensor Circuit Intermittent Voltage Low
P1133 H02S Insufficient Switching Bank 1 Sensor 1
P1134 H02S Transition Time Ratio Bank 1 Sensor 1
P1153 H02S Insufficient Switching Bank 2 Sensor 1
P1154 H02S Transition Time Ratio Bank 2 Sensor 1
P1171 Fuel System Lean During Acceleration

Isuzu Trouble Codes 1200-1299

P1297 Electrical Load Detector Circuit Input Low
P1298 Electrical Load Detector Circuit Input High

Isuzu Trouble Codes 1300-1399

P1300 Random Misfire
P1336 CKP System Variation Not Learned
P1359 CKP/TDC Sensor Disconnected
P1361 TDC Sensor Intermittent Interruption
P1362 TDC Sensor No Signal
P1380 ABS Rough Road System Fault
P1381 Cylinder Position Sensor Intermittent Interruption, Misfire Detected (Except 1998 Rodeo)
P1381 ABS Rough Road Class 2 Serial Data Fault Or Link Error (1998 Rodeo)
P1382 Cylinder Position Sensor No Signal
P1390 G Sensor Circuit Intermittent Voltage Low
P1391 G Sensor Performance
P1392 G Sensor Voltage Low
P1393 G Sensor Voltage High
P1394 G Sensor Intermittent Voltage High

Isuzu Trouble Codes 1400-1499

P1404 EGR Valve Stuck Closed
P1406 EGR Valve Pintle Position Circuit
P1441 EVAP System Flow During Non-Purge
P1442 EVAP Vacuum Switch Voltage High During Ignition On
P1459 EVAP Emission Purge Flow Switch Malfunction
P1491 EGR Valve Lift Insufficient Detected
P1498 EGR Valve Lift Sensor Voltage High

Isuzu Trouble Codes 1500-1599

P1508 IAC System RPM Low
P1509 IAC System RPM High
P1546 A/C Compressor Clutch Output Circuit Malfunction
P1548 A/C Compressor Clutch Output Circuit Malfunction

Isuzu Trouble Codes 1600-1699

P1607 PCM Internal Circuit Failure A
P1618 SPI Communications Error
P1625 PCM Unexpected Reset
P1627 PCM A/D Conversion Malfunction
P1635 5 Volt Reference Voltage Circuit Malfunction
P1640 ODM 1 Input Voltage High (Except 1998 Rodeo)
P1640 ODM Output A Circuit Fault (1998 Rodeo)
P1650 Quad Driver Module A Fault

Isuzu Trouble Codes 1700-1799

P1790 Trans ROM Checksum Error
P1792 Trans EEPROM Checksum Error

Isuzu Trouble Codes 1800-1899

P1835 Trans Kickdown Switch Malfunction
P1850 Brake Band Apply Solenoid Malfunction
P1860 TCC PWM Solenoid Circuit Failure
P1870 Transmission Component Slipping

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