Engine Control System Self-Diagnostics - 4-Cylinder - Gasoline
- Diagnostic Trouble Code Definitions
- Diagnostic Tests
- Notes
- DTC P0105: Manifold Absolute Pressure (Map)/Barometric Pressure Sensor Circuit
- DTC P0106: Manifold Absolute Pressure (Map)/Barometric Pressure Sensor Circuit Range/Performance
- DTC P0110: Intake Air Temperature (IAT) Sensor Circuit
- DTC P0115: Engine Coolant Temperature (ECT) Sensor Circuit
- DTC P0116: Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance
- DTC P0120: Throttle Position (TP) Sensor Circuit
- DTC P0121: Throttle Position (TP) Sensor Circuit Range/Performance
- DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control (Except CALIF. Emissions)
- DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control (CALIF. Emissions)
- DTC P0128: Thermostat Malfunction
- DTC P0130: Heated Oxygen Sensor No. 1 Circuit (Except CALIF. Emissions)
- DTC P0133: Oxygen Sensor No. 1 Circuit Slow Response (Except CALIF. Emissions)
- DTC P0135: Heated Oxygen Sensor No. 1 Heater Circuit (Except CALIF. Emissions)
- DTC P0136: Heated Oxygen Sensor No. 2 Circuit
- DTC P0141: Heated Oxygen Sensor No. 2 Heater Circuit
- DTC P0171 Or P0172: System Too Lean/Rich (Except CALIF. Emissions)
- DTC P0171 Or P0172: System Too Lean/Rich (CALIF. Emissions)
- DTC P0300: Random Misfire Detected
- DTCS P0301-P0304: Cylinders No. 1-4 Misfire Detected
- DTC P0325: Knock Sensor Circuit
- DTC P0335 Or P1335: Crankshaft Position (CKP) Sensor Circuit
- DTC P0340: Camshaft Position (CMP) Sensor Circuit
- DTC P0401: Insufficient Exhaust Gas RECIRCULATION (EGR) Flow Detected
- DTC P0402: Excessive Exhaust Gas RECIRCULATION (EGR) Flow Detected
- DTC P0420: Catalyst System Efficiency Below Threshold (Except CALIF. Emissions)
- DTC P0420: Catalyst System Efficiency Below Threshold (CALIF. Emissions)
- DTC P0440: Evaporative Emission Control System, Or DTC P0442: Evaporative Emission Control System Leak Detected
- DTC P0441: Incorrect EVAP Purge Flow, Or DTC P0446: EVAP Vent Control Circuit
- DTC P0450: EVAP Pressure Sensor Circuit, Or DTC P0451: EVAP Pressure Sensor Range/Performance
- DTC P0500: Vehicle Speed Sensor Circuit
- DTC P0505: Idle Air Control (IAC) System Circuit (Except CALIF. Emissions)
- DTC P0505: Idle Air Control (IAC) System Circuit (CALIF. Emissions)
- DTC P1130: Air/Fuel Sensor Circuit Range/Performance (CALIF. Emissions)
- DTC P1133: Air/Fuel Sensor Circuit Response (CALIF. Emissions)
- DTC P1135: Air/Fuel Sensor Heater Circuit (CALIF. Emissions)
- DTC P1300 Or P1310: IGNITOR Circuit
- DTC P1335: Crankshaft Position (CKP) Sensor Circuit
- DTC P1520: Stoplight Switch Signal Circuit (A/T Only)
- DTC P1600: ECM Batt Circuit
- DTC P1780: Park/Neutral Position (PNP) Switch Circuit