Engine Control System - Diagnosis
- How To Proceed With Troubleshooting
- Customer Problem Analysis Check
- Pre-Check
- Readiness Monitor Drive Pattern
- Diagnostic Trouble Code Chart
- Parts Location
- Terminals Of ECM
- Problem Symptoms Table
- Circuit Inspection
- Notes
- DTC P0031, P0032, P0037, P0038, P0051, P0052, P0057, P0058: Oxygen Sensor Heater Control Circuit
- DTC P0100, P0102, P0103: Mass Or Volume Air Flow Circuit
- DTC P0101: Mass or Volume Air Flow Circuit Range/ Performance Problem
- DTC P0110, P0112, P0113: Intake Air Temperature Circuit
- DTC P0115, P0117, P0118: Engine Coolant Temperature Circuit
- DTC P0116: Engine Coolant Temperature Circuit Range/ Performance Problem
- DTC P0120, P0122, P0123, P0220, P0222, P0223, P2135: Throttle/Pedal Position Sensor/Switch
- DTC P0121: Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance Problem
- DTC P0125: Insufficient Coolant Temperature for Closed Loop Fuel Control
- DTC P0128: Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
- DTC P0130, P0150, P2195, P2196, P2167, P2198: Oxygen Sensor Circuit
- DTC P0133: Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 1), DTC P0153: Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 1)
- DTC P0134: Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 1), DTC P0154: Oxygen Sensor Circuit No Activity Detected (Bank 2 Sensor 1)
- DTC P0136: Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2), DTC P0156: Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2)
- DTC P0171: System too Lean (Bank 1), DTC P0172: System too Rich (Bank 1), DTC P0174: System too Lean (Bank 2), DTC P0175: System too Rich (Bank 2)
- DTC P0230: Fuel Pump Primary Circuit
- DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308: Random/Multiple Cylinder Misfire Detected
- DTC P0325: Knock Sensor 1 Circuit (Bank 1 or Single Sensor), DTC P0330: Knock Sensor 2 Circuit (Bank 2)
- DTC P0335: Crankshaft Position Sensor "A" Circuit, DTC P0339: Crankshaft Position Sensor "A" Circuit Intermittent
- DTC P0340: Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor), DTC P0341: Camshaft Position Sensor "A" Circuit Range/Performance (Single Sensor)
- DTC P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358: IGNITOR Coil Primary/Secondary Circuit
- DTC P0420: Catalyst System Efficiency Below Threshold (Bank 1), DTC P0430: Catalyst System Efficiency Below Threshold (Bank 2)
- DTC P0441, P0446, P2418: Evaporative Emission Control System
- DTC P0442, P0455, P0456: Evaporative Emission Control System Leak Detected
- DTC P0451, P0452, P0453: Evaporative Emission Control System Pressure Sensor/Switch
- DTC P0500: Vehicle Speed Sensor, DTC P0503 Vehicle Speed Sensor "A" Intermittent/Erratic/High
- DTC P0504: Brake Switch "A"/"B" Correlation
- DTC P0505: Idle Air Control System
- DTC P0560: System Voltage
- DTC P0604, P0606, P0607, P0657:
- DTC P0617: Starter Relay Circuit High
- DTC P2102: Throttle Actuator Control Motor Circuit Low, DTC P2103: Throttle Actuator Control Motor Circuit High
- DTC P2111: Throttle Actuator Control System -Stuck Open, DTC P2112: Throttle Actuator Control System -Stuck Closed
- DTC P2118: Throttle Actuator Control Motor Current Range/Performance
- DTC P2119: Throttle Actuator Control Throttle Body Range/Performance
- DTC P2120, P2122, P2123, P2125, P2127, P2128, P2138: Throttle/Pedal Position Sensor/Switch
- DTC P2121: Throttle/Pedal Position Sensor/Switch "D" Circuit Range/Performance
- Fuel Pump Control Circuit
- Cranking Hold Function Circuit
- MIL Circuit