ENGINE CONTROL SYSTEM TESTS W/CODES - 4-Cylinder
- Diagnostic Trouble Code Definitions
- Self-Diagnostic Tests
- * Please Read First *
- DTC P0100: Mass Airflow (MAF) Sensor Circuit
- DTC P0101: Mass Airflow (MAF) Sensor Circuit Range/Performance Problem
- 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 Problem
- DTC P0120: Throttle Position (TP) Sensor/Switch Circuit Malfunction
- DTC P0121: Throttle Position (TP) Sensor/Switch Circuit Range/Performance Problem
- DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
- DTC P0130: Heated Oxygen Sensor Circuit (Sensor No. 1)
- DTC P0133: Heated Oxygen Sensor Circuit (Sensor No. 1) Slow Response
- DTC P0135 Or P0141: Heated Oxygen Sensor Circuit Fault
- DTC P0136: Heated Oxygen Sensor Circuit (Sensor No. 2)
- DTC P0141: Heated Oxygen Sensor Circuit (Sensor No. 2)
- DTC P0171: System Too Lean (Fuel Trim) DTC P0172: System Too Rich (Fuel Trim)
- 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
- DTC P0440: Evaporative Emission Control System Malfunction
- DTC P0441: Evaporative Emission Control System, Incorrect Purge Flow Or DTC P0446: EVAP Vent Control Malfunction
- DTC P0450: EVAP Pressure Sensor Fault Or DTC P0451: EVAP Pressure Sensor Range/Performance
- DTC P0500: Vehicle Speed Sensor Fault
- DTC P0505: Idle Air Control (IAC) System Malfunction
- DTC P1300: IGNITOR Circuit No. 1 Fault
- DTC P1310: IGNITOR Circuit No. 2 Fault
- DTC P1335: Crankshaft Position (CKP) Sensor Circuit
- DTC P1520: Stoplight Switch Signal Malfunction (A/T Only)
- DTC P1600: ECM Batt Malfunction
- DTC P1780: Park/Neutral Position (PNP) Switch (A/T Only)