ECM/PCM Code Description

EMISSION MALFUNCTION CODES

CODE 13 - Oxygen Sensor Circuit
CODE 14 - Engine Coolant Temperature (ECT) Sensor Circuit (High Temp.)
CODE 15 - Engine Coolant Temperature (ECT) Sensor Circuit (Low Temp.)
CODE 21 - Throttle Position Sensor (TPS) Circuit (High Sig.)
CODE 22 - Throttle Position Sensor (TPS) Circuit (Low Sig.)
CODE 23 - Intake Air Temperature (IAT) Sensor Circuit (Low Temp.)
CODE 24 - Vehicle Speed Sensor (VSS)
CODE 25 - Intake Air Temperature (IAT) Sensor Circuit (High Temp.)
CODE 32 - Exhaust Gas Recirculation (EGR)
CODE 33 - Manifold Absolute Pressure (MAP) Sensor Circuit (High Sig.)
CODE 34 - Manifold Absolute Pressure (MAP) Sensor Circuit (Low Sig.)
CODE 35 - Idle Air Control (IAC) Error
CODE 42 - Electronic Spark Timing (EST)
CODE 43 - Electronic Spark Control (ESC)
CODE 44 - Oxygen Sensor (HO2S) Circuit (Lean Exhaust Indicated)
CODE 45 - Oxygen Sensor (HO2S) Circuit (Rich Exhaust Indicated)
CODE 51 - PROM (CAL-PAK) Error
CODE 52 - Fuel CAL-PAK Error
CODE 53 - System Over Voltage
CODE 54 - Fuel Pump Relay Circuit (Low Voltage)
CODE 55 - Faulty ECM