Trouble Codes
NOTE:
Codes listed in TROUBLE CODE INDEX table are not used on all vehicles.
NOTE:
If MIL stays on, ECM may be faulty.
TROUBLE CODE INDEX
| Code | Description | Possible Cause |
|---|---|---|
| 11 | Heated Oxygen Sensor (HO2S) (4-Wire Oxygen Sensor) | Faulty O2S, Connector Or Harness, Low Or High Fuel Pressure, Defective Injector(s), Intake Air Leaks |
| 12 | Airflow Sensor | Faulty Airflow Sensor, Connector Or Harness |
| 13 | Intake Air Temperature Sensor | Faulty IAT Sensor, Connector Or Harness |
| 14 | Throttle Position Sensor | Faulty TP Sensor, Connector Or Harness, Closed Throttle Position Switch |
| 21 | Engine Coolant Temperature (ECT) Sensor | Faulty ECT Sensor, Connector Or Harness |
| 22 | Crankshaft Position (CKP) Sensor | Faulty Distributor Assembly (If Equipped), Faulty CKP Sensor, Connector Or Harness |
| 23 | Camshaft Position Sensor | Faulty Distributor Assembly (If Equipped), Faulty CMP Sensor, Connector Or Harness |
| 24 | Vehicle Speed Sensor | Faulty VSS, Connector Or Harness |
| 25 | Barometric Pressure Sensor | Faulty BARO Pressure Sensor, Connector Or Harness |
| 36 | Ignition Timing Adjustment Signal | Connector Or Harness |
| 41 | Fuel Injector | Low Or High Injector Coil Resistance, Connector Or Harness |
| 42 | Fuel Pump | Faulty ECM, Faulty MFI Relay, Connector Or Harness |
| 43 | EGR Temperature Sensor | Faulty EGR Valve, Faulty EGR Temperature Sensor, Faulty EGR Solenoid, Faulty EGR Vacuum Control, Connector Or Harness |
| 55 | Idle Air Control Position Sensor | Faulty IAC Valve Position Sensor, Faulty IAC Motor Assembly, Faulty ECM, Connector Or Harness |
| 59 | Rear Oxygen Sensor (O2S) | Faulty O2S Sensor, Faulty O2S Sensor Heater, Faulty ECM, Connector Or Harness |
| 61 | Transaxle Control Module Signal | Faulty TCM, Connector Or Harness |
| 69 | Rear Oxygen Sensor (O2S) | Faulty O2S Sensor, Faulty O2S Sensor Heater, Faulty ECM, Connector Or Harness |