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Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE (DTC) DEFINITIONS

DTC Description
P0100 (1) Mass Airflow (MAF) Sensor Circuit
P0101 (1) Mass Airflow (MAF) Sensor Circuit Range/Performance Problem
P0110  Intake Air Temperature (IAT) Sensor Circuit
P0115  Engine Coolant Temperature (ECT) Sensor Circuit
P0116 (1) Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem
P0120  Throttle Position (TP) Sensor Circuit Malfunction
P0121 (1) Throttle Position (TP) Sensor Circuit Range/Performance Fault
P0125  Insufficient Coolant Temperature For Closed Loop Fuel Control (Except Calif. Emissions)
P0125  Insufficient Coolant Temperature For Closed Loop Fuel Control (Calif. Emissions)
P0130 (1) (2) Heated Oxygen Sensor Fault (Except Calif. Emissions)
P0133 (1) (2) Heated Oxygen Sensor Circuit Slow Response (Except Calif. Emissions)
P0135 (1) Heated Oxygen Sensor Heater Circuit (Except Calif. Emissions)
P0136 (1) (2) Heated Oxygen Sensor Circuit
P0141 (1) Heated Oxygen Sensor Heater Circuit
P0150 (1) Heated Oxygen Sensor Fault (Except Calif. Emissions)
P0153 (1) Heated Oxygen Sensor Circuit Slow Response (Except Calif. Emissions)
P0155 (1) Heated Oxygen Sensor Heater Circuit (Except Calif. Emissions)
P0171 (1) System Too Lean (Calif. Emissions)
P0171 (1) System Too Lean (Except Calif. Emissions)
P0172 (1) System Too Rich (Calif. Emissions)
P0172 (1) System Too Rich (Except Calif. Emissions)
P0300  Random Misfire Detected
P0301 (1) Cylinder No. 1 Misfire Detected
P0302 (1) Cylinder No. 2 Misfire Detected
P0303 (1) Cylinder No. 3 Misfire Detected
P0304 (1) Cylinder No. 4 Misfire Detected
P0305 (1) Cylinder No. 5 Misfire Detected
P0306 (1) Cylinder No. 6 Misfire Detected
P0325  Knock Sensor No. 1 Circuit
P0330 (1) Knock Sensor No. 2 Circuit
P0335 (1) Crankshaft Position (CKP) Sensor Circuit
P0340 (1) Camshaft Position (CMP) Sensor Circuit
P0401 (1) Insufficient Exhaust Gas Recirculation (EGR) Flow Detected
P0402 (1) Excessive Exhaust Gas Recirculation (EGR) Flow Detected
P0420 (1) Catalyst System Efficiency Below Threshold (Calif. Emissions)
P0420 (1) Catalyst System Efficiency Below Threshold (Except Calif. Emissions)
P0440 (1) Evaporative Emission Control System System Malfunction
P0441 (1) Incorrect EVAP Purge Flow
P0446 (1) EVAP Vent Control Fault
P0450  EVAP Pressure Sensor Fault
P0451  EVAP Pressure Sensor Range/Performance
P0500 (1) Vehicle Speed Sensor Fault
P0505 (1) Idle Air Control (IAC) System Malfunction
P1130 (1) Air/Fuel Sensor Circuit Range/Performance Fault (Calif. Emissions)
P1133 (1) Air/Fuel Sensor Circuit Response Malfunction (Calif. Emissions)
P1135 (1) Air/Fuel Sensor Heater Circuit Malfunction (Calif. Emissions)
P1150 (1) Air/Fuel Sensor Circuit Range/Performance Fault (Calif. Emissions)
P1153 (1) Air/Fuel Sensor Circuit Response Malfunction (Calif. Emissions)
P1155 (1) Air/Fuel Sensor Heater Circuit Malfunction (Calif. Emissions)
P1300  Ignitor Circuit Malfunction
P1335  Crankshaft Position (CKP) Sensor Circuit
P1410 (1) EGR Valve Position Sensor Circuit Malfunction
P1411 (1) EGR Valve Position Sensor Circuit Range/Performance
P1520 (1) Stoplight Switch Signal Malfunction (A/T Only)
P1600  ECM BATT Malfunction
P1780 (1) Park/Neutral Position (PNP) Switch
(1) Two-trip detection logic code. For more information, see TWO-TRIP DETECTION LOGIC in TESTS W/CODES - INTRODUCTION.
(2) Some models are equipped with non-heated oxygen sensors.