ENGINE CONTROL SYSTEM TESTS W/CODES - Non-Turbo
- 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 Circuit Malfunction
- DTC P0121: Throttle Position (TP) Sensor Circuit Range/Performance Fault
- DTC P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control
- DTC P0130 Or P0150: Heated Oxygen Circuit (Sensor No. 1)
- DTC P0133 Or P0153: Heated Oxygen Sensor Circuit (Sensor No. 1) Slow Response
- DTC P0135 Or P0155: Heated Oxygen Sensor Heater Circuit
- DTC P0136 Or P0156: Heated Oxygen Sensor Circuit (Sensor No. 2)
- DTC P0141 Or P0161: Heated Oxygen Sensor Heater Circuit
- DTC P0171: System Too Lean (Fuel Trim) Or DTC P0172: System Too Rich (Fuel Trim)
- DTC P0300: Random Misfire Detected
- DTCS P0301-P0306: Cylinders No. 1-6 Misfire Detected
- DTC P0325: Knock Sensor No. 1 Circuit Or DTC P0330: Knock Sensor No. 2 Circuit
- DTC P0335 Or P1335: Crankshaft Position (CKP) Sensor "A" Circuit
- DTC P0340: Camshaft Position (CMP) Sensor Circuit
- DTC P0420 Or P0430: Catalyst System Efficiency Below Threshold
- DTC P0440: Evaporative Emission Control System Malfunction
- DTC P0441: Incorrect EVAP Purge Flow Or DTC P0446: EVAP Vent Control Malfunction
- DTC P0450: EVAP Pressure Sensor Fault DTC P0451: EVAP Pressure Sensor Range/Performance
- DTC P0500: Vehicle Speed Sensor Fault
- DTC P0505: Idle Air Control (IAC) System Malfunction
- DTC P1120: Accelerator Pedal Position (App) Sensor Circuit Fault
- DTC P1121: Accelerator Pedal Position (App) Sensor Range/Performance Fault
- DTC P1125: Throttle Control Motor Circuit Malfunction
- DTC P1126: Magnetic Clutch Circuit Malfunction
- DTC P1127: Electronic Throttle Control System Actuator Power Source Circuit Fault
- DTC P1128: Throttle Control Motor Lock Malfunction
- DTC P1129: Electronic Throttle Control System Fault
- DTC P1300: IGNITOR Circuit Malfunction
- DTC P1335: Crankshaft Position (CKP) Sensor Circuit
- DTC P1349: Variable Valve Timing (VVT) System Fault
- DTC P1520: Stoplight Switch Signal Malfunction (A/T Only)
- DTC P1600: ECM Batt Malfunction
- DTC P1656: Oil Control Valve (OCV) Fault
- DTC P1780: Park/Neutral Position (PNP) Switch