Engine Controls - Self-Diagnostics
- Introduction
- Self-Diagnostic System
- Summary
- Diagnostic Tests
- Notes
- DTC P0100-P0103: No Mass Airflow (MAF) Sensor Signal
- DTC P0106: Manifold Absolute Pressure (Map) Sensor Performance Problem
- DTC P0107-P0108: Manifold Absolute Pressure (Map) Sensor Circuit
- DTC P0112-P0113: Intake Air Temperature (IAT) Sensor Circuit
- DTC P0116: Engine Coolant Temperature (ECT) Sensor Performance Problem
- DTC P0117-P0118: Engine Coolant Temperature (ECT) Sensor Circuit
- DTC P0125: Delayed Closed Loop Operation
- DTC P0131, P0132 & P0134: Front Heated Oxygen Sensor (Ho2S) Circuit
- DTC P0133: Ho2S-1 Slow Response
- DTC P0137, P0138 & P0140: Faulty Rear Ho2S
- DTC P0171: Long Term Fuel Trim Multiplicative Fuel Mixture Too Lean
- DTC P0172: Long Term Fuel Trim Multiplicative Fuel Mixture Too Rich
- DTC P0300: Random Misfire Detected
- DTC P0301-P0306: Cylinders 1-6 Misfire Detected
- DTC P0327: Knock Signal Input
- DTC P0332: Knock Signal Input
- DTC P0336 & P0337: Crankshaft Position (CKP) Sensor
- DTC P0340: Camshaft Position Signal
- DTC P0410: Secondary Air Injection (SAI) Airflow Malfunction (2000 V6 Lev Models)
- DTC P0420: Catalytic Converter Malfunction
- DTC P0441: EVAP Purge Valve Malfunction
- DTC P0442 & P0455: EVAP System Leak Detected
- DTC P0444-P0445: EVAP Canister Purge Valve Circuit Malfunction
- DTC P0452-P0453: Fuel Tank Pressure (Ftp) Sensor Circuit
- DTC P0455: Large Leak In EVAP System
- DTC P0501 & P0502: Vehicle Speed Sensor (VSS) Circuit
- DTC P0506: Idle Speed Control (ISC) Too Low
- DTC P0507: Idle Speed Control (ISC) Too High
- DTC P0605: Internal Control Module Malfunction
- DTC P1105: Charge Air Absolute Pressure (CAAP) Sensor Hose Leak (4-Cylinder)
- DTC P1106: Charge Air Absolute Pressure (CAAP) Sensor Circuit Performance Problem
- DTC P1107-P1108: Charge Air Absolute Pressure (CAAP) Sensor Circuit
- DTC P1110: Charge Air Bypass (Cab) Valve Performance Malfunction (4-Cylinder)
- DTC P1135-P1136: Ho2S-1 Heater Circuit
- DTC P1141-P1142: Ho2S-2 Heater Circuit
- DTC P1171-P1172: Short Term Fuel Trim Lean Or Rich Mixture
- DTC P1181-P1182: Long Term Fuel Trim-Additive Lean Or Rich Mixture
- DTC P1230: Throttle Position Sensor Circuits No. 1 & 2 Voltage Sum Out Of Range
- DTC P1240: Throttle Motor Short Circuit
- DTC P1251-P1253: Throttle Motor Full Pulse-Width Modulation Malfunction
- DTC P1260: Insufficient Throttle Return Spring Force
- DTC P1261: Throttle Binding
- DTC P1263: Throttle Moved Manually While Engine Running
- DTC P1264: Throttle Stays Open When Pedal Is Released
- DTC P1300: Random Misfire Detected, Potential Catalyst Damage
- DTC P1301-P1306: Cylinder 1-6 Misfire Detected, Potential Catalyst Damage
- DTC P1310 & P1320: Ignition Discharge Module (IDM) Malfunction
- DTC P1312: Combustion Detection Cylinders 1 & 2 Circuit Fault (4-Cylinder)
- DTC P1313: Combustion Detection Bank 1 Circuit Fault (V6)
- DTC P1320: Ignition Discharge Module (IDM) Malfunction - (V6) Front Cylinder Bank
- DTC P1324: Combustion Detection Bank 2 Circuit Fault (V6)
- DTC P1334: Combustion Detection Cylinders 3 & 4 Circuit Fault (4-Cylinder)
- DTC P1390: Random Misfire & Low Fuel Level Detected - Possible Catalyst Damage (4-Cylinder)
- DTC P1390: Random Misfire & Low Fuel Level Detected - Possible Catalyst Damage (V6)
- DTC P1391-P1396: Cylinders 1-6 Misfire & Low Fuel Level Detected - Possible Catalyst Damage
- DTC P1413 & P1414: Secondary Air Injection Pump Relay Circuit Faulty (2000 V6 Lev Models)
- DTC P1441: EVAP Purge Valve Circuit & Low Fuel Level Problems At Same Time (Lev)
- DTC P1442 & P1455: EVAP Purge Valve Circuit Leak & Fuel Level Sensor Problem Detected At Same Time (Lev)
- DTC P1444 & P1445: EVAP Shut-Off Valve Circuit Malfunction
- DTC P1451-P1453: Fuel Tank Pressure (Ftp) Sensor Malfunction
- DTC P1455: EVAP Purge Valve Circuit Large Leak & Fuel Level Sensor Problem Detected At Same Time (Lev)
- DTC P1460: Alarm Immobilizer Active
- DTC P1491-P1493: Tank Pressure Sensor & Fuel Level Sensor Problems Detected At Same Time (Lev)
- DTC P1530-P1531: Pedal Position Sensor Circuits No. 1 & 2 Voltage Sum Out Of Range
- DTC P1532: Pedal Position Sensors No. 1 & 2 Short In ECM Control Circuits
- DTC P1549: Charge Air Malfunction (4-Cylinder)
- DTC P1576 & P1577: Brake Light Switch Circuit Malfunction
- DTC P1601-P1633: Internal ECM Malfunction (Except P1624)
- DTC P1624: Transmission Control Module Request "Check Engine" Input
- DTC P1640: Main Relay Circuit Voltage Loss At ECM Connector Terminal No. 1
- DTC P1641: No Voltage From Fuel Pump Relay To Fuel Pump & Ho2S Heater
- DTC P1652-P1653: Main Relay Coil Open Or Short Circuit
- DTC P1654-P1655: Fuel Pump Relay Coil Circuit
- DTC P1656-P1657: A/C Relay Coil Circuit
- DTC P1658-P1659: Charge Air Bypass Valve (CABV) Circuit (4-Cylinder)
- DTC P1662-P1663: Charge Air Control (CAC) Valve Circuit (4-Cylinder)
- DTC P1670-P1671: Limp-Home Solenoid Relay Coil Circuit
- DTC P1676: Fuel Injectors Open Or Short Circuit
- DTC P1908: Serial Bus Data Malfunction (MIU)
- DTC P1923: Serial Bus Data Malfunction (TCM)
- DTC P1925: No Bus Communication With Torque Control/Anti-Lock Brake System (TC/Abs)