Section 1 (Engine Control System - Self-Diagnostics - 3.8L)
WARNING: This page is about a different variant/trim than selected.
- Model Identification
- Introduction
- Self-Diagnostic System
- Description
- Scan Tool Display
- Diagnostic Procedure
- Retrieving Diagnostic Trouble Codes
- On-Board Diagnostic (OBD) System Check
- Mil Inoperative
- DLC Diagnosis Or No Scan Tool Data
- Diagnostic Trouble Code Definitions
- Hard Or Intermittent Trouble Code Determination
- Clearing Diagnostic Trouble Codes
- Pcm Location
- Diagnostic Materials
- Special Tools (Diagnostic)
- Scan Tool Usage
- Summary
- Diagnostic Tests
- Notes
- DTC P0101: MAF SYSTEM PERFORMANCE (BONNEVILLE, CAMARO, FIREBIRD, GRAND PRIX, LeSABRE & REGAL)
- DTC P0101: MAF System Performance (Impala, Monte CARLO & Park Avenue)
- DTC P0102: MAF Sensor Circuit - Low Frequency
- DTC P0103: MAF Sensor Circuit - High Frequency
- DTC P0107: Map Sensor Circuit - Low Voltage
- DTC P0108: Map Sensor Circuit - High Voltage (Except Park Avenue)
- DTC P0108: Map Sensor Circuit - High Voltage (Park Avenue)
- DTC P0112: IAT Sensor Circuit - Low Voltage
- DTC P0113: IAT Sensor Circuit - High Voltage
- DTC P0117: ECT Sensor Circuit - Low Voltage
- DTC P0118: ECT Sensor Circuit - High Voltage
- DTC P0121: TP Sensor Performance
- DTC P0122: TP Sensor Circuit - Low Voltage
- DTC P0123: TP Sensor Circuit - High Voltage
- DTC P0125: ECT Excessive Time To Enter Closed Loop Fuel Control
- DTC P0128: ECT Less Than Thermostat Regulating Temperature
- DTC P0131: Ho2S Circuit Low Voltage - Bank 1, Sensor 1
- DTC P0132: Ho2S Circuit High Voltage - Bank 1, Sensor 1
- DTC P0133: HO2S SLOW RESPONSE - BANK 1, SENSOR 1 (EXCEPT BONNEVILLE, CAMARO, FIREBIRD & LeSABRE)
- DTC P0133: HO2S SLOW RESPONSE - BANK 1, SENSOR 1 (BONNEVILLE, CAMARO, FIREBIRD & LeSABRE)
- DTC P0134: HO2S CIRCUIT INSUFFICIENT ACTIVITY - BANK 1, SENSOR 1 (EXCEPT BONNEVILLE, CAMARO, FIREBIRD & LeSABRE)
- DTC P0134: HO2S CIRCUIT INSUFFICIENT ACTIVITY - BANK 1, SENSOR 1 (BONNEVILLE, CAMARO, FIREBIRD & LeSABRE)
- DTC P0135: HO2S HEATER PERFORMANCE - BANK 1, SENSOR 1 (EXCEPT BONNEVILLE, CAMARO, FIREBIRD & LeSABRE)
- DTC P0135: HO2S HEATER PERFORMANCE - BANK 1, SENSOR 1 (BONNEVILLE, CAMARO, FIREBIRD & LeSABRE)
- DTC P0137: Ho2S Circuit Low Voltage - Bank 1, Sensor 2
- DTC P0138: Ho2S Circuit High Voltage - Bank 1, Sensor 2
- DTC P0140: Ho2S Circuit Insufficient Activity - Bank 1, Sensor 2
- DTC P0141: Ho2S 2 Heater Performance - Bank 1, Sensor 2
- DTC P0151: Ho2S Circuit Low Voltage - Bank 2, Sensor 1 (CAMARO & Firebird)
- DTC P0152: Ho2S Circuit High Voltage - Bank 2, Sensor 1 (CAMARO & Firebird)
- DTC P0153: Ho2S Circuit Slow Response - Bank 2, Sensor 1 (CAMARO & Firebird)
- DTC P0154: Ho2S Circuit Insufficient Activity - Bank 2, Sensor 1 (CAMARO & Firebird)
- DTC P0155: Ho2S Heater Performance - Bank 2, Sensor 1 (CAMARO & Firebird)
- DTC P0171: Fuel Trim System Lean - Bank 1 (Except BONNEVILLE, CAMARO, Firebird & Park Avenue)
- DTC P0171: Fuel Trim System Lean - Bank 1 (BONNEVILLE, CAMARO, Firebird & Park Avenue)
- DTC P0172: Fuel Trim System Rich - Bank 1 (Except BONNEVILLE, CAMARO, Firebird & Park Avenue)
- DTC P0172: Fuel Trim System Rich - Bank 1 (BONNEVILLE, CAMARO, Firebird & Park Avenue)
- DTC P0174: Fuel Trim System Lean - Bank 2 (CAMARO & Firebird)
- DTC P0175: Fuel Trim System Rich - Bank 2 (CAMARO & Firebird)
- DTC P0201: Injector No. 1 Control Circuit (Except CAMARO & Firebird)
- DTC P0201: Injector No. 1 Control Circuit (CAMARO & Firebird)
- DTC P0202: Injector No. 2 Control Circuit (Except CAMARO & Firebird)
- DTC P0202: Injector No. 2 Control Circuit (CAMARO & Firebird)
- DTC P0203: Injector No. 3 Control Circuit (Except CAMARO & Firebird)
- DTC P0203: Injector No. 3 Control Circuit (CAMARO & Firebird)
- DTC P0204: Injector No. 4 Control Circuit (Except CAMARO & Firebird)
- DTC P0204: Injector No. 4 Control Circuit (CAMARO & Firebird)
- DTC P0205: Injector No. 5 Control Circuit (Except CAMARO & Firebird)
- DTC P0205: Injector No. 5 Control Circuit (CAMARO & Firebird)
- DTC P0206: Injector No. 6 Control Circuit (Except CAMARO & Firebird)
- DTC P0206: Injector No. 6 Control Circuit (CAMARO & Firebird)
- DTC P0230: Fuel Pump Control Circuit
- DTC P0243: Supercharger Boost Solenoid Control Circuit (BONNEVILLE, Grand PRIX, Park Avenue & Regal - VIN 1)
- DTC P0300-P0306: Engine Misfire Detected
- DTC P0325: Knock Sensor Module Circuit
- DTC P0327: Knock Sensor Circuit - Bank 1 (Except CAMARO & Firebird)
- DTC P0327: Knock Sensor Circuit - Bank 1 (CAMARO & Firebird)
- DTC P0332: KNOCK SENSOR CIRCUIT - BANK 2 (BONNEVILLE, LeSABRE & PARK AVENUE)
- DTC P0332: Knock Sensor Circuit - Bank 2 (CAMARO & Firebird)
- DTC P0332: Knock Sensor Circuit - Bank 2 (Grand PRIX, Impala, Monte CARLO & Regal)
- DTC P0336: Crankshaft Position (CKP) Sensor Circuit
- DTC P0341: Camshaft Position (CMP) Sensor Performance
- DTC P0401: EGR System Insufficient Flow
- DTC P0403: EGR Solenoid Control Circuit
- DTC P0404: EGR Open Position Performance
- DTC P0405: EGR Position Sensor Circuit - Low Voltage
- DTC P0410: Secondary Air Injection (Air) System (Except CAMARO & Firebird)
- DTC P0412: Secondary Air Injection (Air) Solenoid Relay Control Circuit (Except CAMARO & Firebird)
- DTC P0413: Secondary Air Injection (Air) Pump Relay Control Circuit (Except CAMARO & Firebird)
- DTC P0420: Catalyst System Low Efficiency
- DTC P0440: EVAP System
- DTC P0442: EVAP System Small Leak Detected
- DTC P0443: EVAP Purge Solenoid Control Circuit
- DTC P0446: EVAP Vent System Performance
- DTC P0449: EVAP Canister Vent Solenoid Valve Control Circuit
- DTC P0452: Fuel Tank Pressure Sensor Circuit - Low Voltage (Except Grand PRIX, Impala, Monte CARLO & Regal)
- DTC P0452: Fuel Tank Pressure Sensor Circuit - Low Voltage (Grand PRIX, Impala, Monte CARLO & Regal)
- DTC P0453: Fuel Tank Pressure Sensor Circuit - High Voltage (Except Grand PRIX, Impala, Monte CARLO & Regal)
- DTC P0453: Fuel Tank Pressure Sensor Circuit - High Voltage (Grand PRIX, Impala, Monte CARLO & Regal)
- DTC P0462: FUEL LEVEL SENSOR CIRCUIT - LOW VOLTAGE (BONNEVILLE & LeSABRE)
- DTC P0462: Fuel Level Sensor Circuit - Low Voltage (CAMARO, Firebird & Park Avenue)
- DTC P0462: Fuel Level Sensor Circuit - Low Voltage (Impala, Grand PRIX, Monte CARLO & Regal)
- DTC P0463: FUEL LEVEL SENSOR CIRCUIT - HIGH VOLTAGE (BONNEVILLE & LeSABRE)
- DTC P0463: Fuel Level Sensor Circuit - High Voltage (CAMARO & Firebird)
- DTC P0463: Fuel Level Sensor Circuit - High Voltage (Grand PRIX, Impala, Monte CARLO & Regal)
- DTC P0480: Cooling Fan Relay No. 1 Control Circuit
- DTC P0481: Cooling Fan Relay No. 2 & 3 Control Circuit
- DTC P0500: Vehicle Speed Sensor (VSS) Circuit (CAMARO & Firebird)
- DTC P0506: Idle Speed Rpm Low (CAMARO & Firebird)
- DTC P0507: IAC System Rpm High (Except CAMARO & Firebird)
- DTC P0507: IAC System Rpm High (CAMARO & Firebird)
- DTC P0522: ENGINE OIL PRESSURE SENSOR CIRCUIT - LOW VOLTAGE (BONNEVILLE, LeSABRE & PARK AVENUE)
- DTC P0523: ENGINE OIL PRESSURE SENSOR CIRCUIT - HIGH VOLTAGE (BONNEVILLE, LeSABRE & PARK AVENUE)
- DTC P0530: A/C Refrigerant Pressure Sensor Circuit
- DTC P0560: System Voltage
- DTC P0567: Cruise Control Resume Switch Circuit (CAMARO & Firebird)
- DTC P0568: Cruise Control Set Switch Circuit (CAMARO & Firebird)
- DTC P0571: Cruise Control Brake Switch Circuit (CAMARO & Firebird)
- DTC P0601: Control Module Read Only Memory (ROM)
- DTC P0602: Control Module Not Programmed
- DTC P0604: Control Module Random Access Memory (Ram)
- DTC P0606: Control Module Internal Performance
- DTC P0620: Generator Performance (Except CAMARO, Firebird & Regal)
- DTC P0620: Generator Performance (CAMARO, Firebird & Regal)
- DTC P0650: MALFUNCTION INDICATOR LIGHT (MIL) CONTROL CIRCUIT (BONNEVILLE, GRAND PRIX & LeSABRE)
- DTC P0650: Malfunction Indicator Light (Mil) Control Circuit (CAMARO, Firebird & Park Avenue)
- DTC P0650: Malfunction Indicator Light (Mil) Control Circuit (Impala, Monte CARLO & Regal)
- DTC P0654: ENGINE SPEED OUTPUT CIRCUIT (LeSABRE)
- DTC P0656: Fuel Level Output Circuit (Grand PRIX)
- DTC P0704: Clutch Switch Circuit (CAMARO & Firebird)
- DTC P1106: Map Sensor Circuit Intermittent High Voltage
- DTC P1107: Map Sensor Circuit Intermittent Low Voltage
- DTC P1111: IAT Sensor Circuit Intermittent High Voltage
- DTC P1112: IAT Sensor Circuit Intermittent Low Voltage
- DTC P1114: ECT Sensor Circuit Intermittent Low Voltage
- DTC P1115: ECT Sensor Circuit Intermittent High Voltage
- DTC P1120: TP Sensor No. 1 Circuit (CAMARO & Firebird)
- DTC P1121: TP Sensor Circuit Intermittent High Voltage (Except CAMARO & Firebird)
- DTC P1122: TP Sensor Circuit Intermittent Low Voltage (Except CAMARO & Firebird)
- DTC P1125: Accelerator Pedal Position (App) System (CAMARO & Firebird)
- DTC P1133: Ho2S Insufficient Switching - Bank 1, Sensor 1 (Except CAMARO & Firebird)
- DTC P1133: Ho2S Insufficient Switching - Bank 1, Sensor 1 (CAMARO & Firebird)
- DTC P1134: Ho2S Transition Time Ratio - Bank 1, Sensor 1 (Except CAMARO & Firebird)
- DTC P1134: Ho2S Transition Time Ratio - Bank 1, Sensor 1 (CAMARO & Firebird)
- DTC P1153: Ho2S Insufficient Switching - Bank 2, Sensor 1 (CAMARO & Firebird)
- DTC P1154: Ho2S Transition Time Ratio - Bank 2, Sensor 1 (CAMARO & Firebird)
- DTC P1189: Engine Oil Pressure (EOP) Switch Performance (Impala & Monte CARLO)
- DTC P1220: Throttle Position Sensor No. 2 Circuit (CAMARO & Firebird)
- DTC P1221: TP Sensor No. 1 & 2 Correlation (CAMARO & Firebird)
- DTC P1260: Fuel Pump Speed Relay Control Circuit (Park Avenue)
- DTC P1260: Fuel Pump Speed Relay Control Circuit (Grand PRIX & Regal)
- DTC P1271: App Sensors No. 1 & 2 Correlation (CAMARO & Firebird)
- DTC P1272: App Sensors No. 2 & 3 Correlation (CAMARO & Firebird)
- DTC P1273: App Sensors No. 1 & 3 Correlation (CAMARO & Firebird)
- DTC P1275: App Sensor No. 1 Circuit (CAMARO & Firebird)
- DTC P1276: App Sensor No. 1 Performance (CAMARO & Firebird)
- DTC P1280: App Sensor No. 2 Circuit (CAMARO & Firebird)
- DTC P1281: App Sensor No. 2 Performance (CAMARO & Firebird)
- DTC P1285: App Sensor No. 3 Circuit (CAMARO & Firebird)
- DTC P1286: App Sensor No. 3 Performance (CAMARO & Firebird)
- DTC P1336: CKP System Variation Not Learned
- DTC P1351: Ignition Control (Ic) Circuit - High Voltage
- DTC P1352: Ignition By-Pass Circuit - High Voltage
- DTC P1361: Ignition Control (Ic) Circuit - Low Voltage
- DTC P1362: Ignition By-Pass Circuit - Low Voltage
- DTC P1374: Crankshaft Position (CKP) High-To-Low Resolution Frequency Correlation
- DTC P1380: Misfire Detected - Rough Road Data Not Available
- DTC P1381: Misfire Detected - No Communication With Brake Control Module
- DTC P1404: EGR Closed Position Performance
- DTC P1441: EVAP System Flow During Non-Purge
- DTC P1515: Control Module Throttle Actuator Position Performance (CAMARO & Firebird)
- DTC P1516: Throttle Actuator Control (TAC) Module - Throttle Actuator Position Performance (CAMARO & Firebird)
- DTC P1517: Throttle Actuator Control (TAC) Module Performance (CAMARO & Firebird)
- DTC P1518: Throttle Actuator Control (TAC) Module Serial Data Circuit (CAMARO & Firebird)
- DTC P1519: Throttle Actuator Control (TAC) Module Internal Circuit (CAMARO & Firebird)
- DTC P1523: Throttle Closed Position Performance (CAMARO & Firebird)
- DTC P1546: A/C Clutch Relay Control Circuit (CAMARO & Firebird)
- DTC P1554: Cruise Control Feedback Circuit
- DTC P1571: Traction Control System (TCS) Torque Request Circuit (Except CAMARO & Firebird)
- DTC P1573: Lost Communications With Brake/Traction Control (EBTCM) System (Grand PRIX & Regal)
- DTC P1574: Stoplight Switch Circuit (CAMARO & Firebird)
- DTC P1575: EXTENDED TRAVEL BRAKE SWITCH CIRCUIT (BONNEVILLE & LeSABRE)
- DTC P1585: Cruise Control Inhibit Output Circuit (Except CAMARO & Firebird)
- DTC P1586: Cruise Control Brake Switch No. 2 Circuit (CAMARO & Firebird)
- DTC P1602: LOST COMMUNICATIONS WITH BRAKE/TRACTION CONTROL (EBTCM) SYSTEM (BONNEVILLE, LeSABRE & REGAL)
- DTC P1602: Lost Communications With Brake/Traction Control (EBTCM) System (Impala & Monte CARLO)
- DTC P1604: LOSS OF INSTRUMENT PANEL CLUSTER (IPC) SERIAL DATA (LeSABRE)
- DTC P1610: Lost Communications With Body Control Module (Impala & Monte CARLO)
- DTC P1626: THEFT DETERRENT FUEL ENABLE SIGNAL LOST (IMPALA, LeSABRE, MONTE CARLO, PARK AVENUE & REGAL)
- DTC P1626: Theft Deterrent Fuel Enable Signal Lost (BONNEVILLE, CAMARO, Firebird & Grand PRIX)
- DTC P1629: Theft Deterrent Fuel Enable Signal Not Received (CAMARO, Firebird & Grand PRIX)
- DTC P1630: THEFT DETERRENT LEARN MODE (BONNEVILLE, IMPALA, LeSABRE, MONTE CARLO, PARK AVENUE & REGAL)
- DTC P1631: THEFT DETERRENT START ENABLE SIGNAL INCORRECT (BONNEVILLE, IMPALA, LeSABRE, MONTE CARLO, PARK AVENUE & REGAL)
- DTC P1635: 5-VOLT REFERENCE NO. 1 CIRCUIT (BONNEVILLE, LeSABRE & PARK AVENUE)
- DTC P1635: 5-Volt Reference No. 1 Circuit (CAMARO & Firebird)
- DTC P1635: 5-Volt Reference No. 1 Circuit (Grand PRIX, Impala, Monte CARLO & Regal)
- DTC P1637: Charging System Light Control Circuit (Grand PRIX)
- DTC P1639: 5-Volt Reference No. 2 Circuit (BONNEVILLE)
- DTC P1639: 5-Volt Reference "B" Circuit (CAMARO & Firebird)
- DTC P1639: 5-Volt Reference "B" Circuit (Grand PRIX, Impala, Monte CARLO & Regal)
- DTC P1639: 5-VOLT REFERENCE "B" CIRCUIT (LeSABRE & PARK AVENUE)
- DTC P1653: Low Engine Oil Level Light Control Circuit (Grand PRIX & Regal)
- DTC P1673: Engine Coolant Temperature Light Control Circuit (Grand PRIX)
- DTC P1689: Traction Control Delivered Torque Output Circuit