GM Service Manual Online
For 1990-2009 cars only

PCM Diagnostic Trouble Codes

Description

Domestic RPO LA1

Export Unleaded RPO LA1

DTC P0101 Mass Air Flow (MAF) Sensor Performance

B

B

DTC P0102 Mass Air Flow (MAF) Sensor Circuit Low Frequency

B

B

DTC P0103 Mass Air Flow (MAF) Sensor Circuit High Frequency

B

B

DTC P0107 Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

B

B

DTC P0108 Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

B

B

DTC P0112 Intake Air Temperature (IAT) Sensor Circuit Low Voltage

B

B

DTC P0113 Intake Air Temperature (IAT) Sensor Circuit High Voltage

B

B

DTC P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

B

B

DTC P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

B

B

DTC P0121 Throttle Position (TP) Sensor Performance

B

B

DTC P0122 Throttle Position (TP) Sensor Circuit Low Voltage

B

B

DTC P0123 Throttle Position (TP) Sensor Circuit High Voltage

B

B

DTC P0125 Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control

B

B

DTC P0131 HO2S Circuit Low Voltage Sensor 1

B

B

DTC P0132 HO2S Circuit High Voltage Sensor 1

B

B

DTC P0133 HO2S Slow Response Sensor 1

B

C

DTC P0134 HO2S Circuit Insufficient Activity Sensor 1

B

B

DTC P0135 HO2S Heater Performance Sensor 1

B

B

DTC P0137 HO2S Circuit Low Voltage Sensor 2

B

B

DTC P0138 HO2S Circuit High Voltage Sensor 2

B

B

DTC P0140 HO2S Circuit Insufficient Activity Sensor 2

B

B

DTC P0141 HO2S Heater Performance Sensor 2

B

C

DTC P0171 Fuel Trim System Lean

B

C

DTC P0172 Fuel Trim System Rich

B

B

DTC P0201 Injector 1 Control Circuit

B

B

DTC P0202 Injector 2 Control Circuit

B

B

DTC P0203 Injector 3 Control Circuit

B

B

DTC P0204 Injector 4 Control Circuit

B

B

DTC P0205 Injector 5 Control Circuit

B

B

DTC P0206 Injector 6 Control Circuit

B

B

DTC P0218 Transmission Fluid Overtemperature in Automatic Transaxle 4T65 - E

C

C

DTC P0230 Fuel Pump Relay Control Circuit

C

C

DTC P0300 Engine Misfire Detected

B

B

DTC P0325 Knock Sensor (KS) Circuit

B

B

DTC P0327 Knock Sensor (KS) Circuit

B

B

DTC P0336 Crankshaft Position (CKP) Sensor Circuit

B

B

DTC P0341 Camshaft Position (CMP) Sensor Performance

B

B

DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient

A

A

DTC P0403 Exhaust Gas Recirculation (EGR) Solenoid Control Circuit

B

B

DTC P0404 Exhaust Gas Recirculation (EGR) Open Position Performance

B

B

DTC P0405 Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Voltage

B

B

DTC P0410 Secondary Air Injection (AIR) System

B

B

DTC P0412 Secondary Air Injection (AIR) Solenoid Control Circuit

B

B

DTC P0418 Secondary Air Injection (AIR) Pump Relay Control Circuit

B

B

DTC P0420 Catalyst System Low Efficiency

A

A

DTC P0440 Evaporative Emission (EVAP) System

A

A

DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected

A

A

DTC P0443 Evaporative Emission (EVAP) Purge Solenoid Control Circuit

B

B

DTC P0446 Evaporative Emission (EVAP) Vent System Performance

A

A

DTC P0449 Evaporative Emission (EVAP) Vent Solenoid Control Circuit

B

B

DTC P0452 Fuel Tank Pressure Sensor Circuit Low Voltage

B

B

DTC P0453 Fuel Tank Pressure Sensor Circuit High Voltage

B

B

DTC P0462 Fuel Level Sensor Circuit Low Voltage

C

C

DTC P0463 Fuel Level Sensor Circuit High Voltage

C

C

DTC P0480 Cooling Fan Relay 1 Control Circuit

B

B

DTC P0481Cooling Fan Relay 2 Control Circuit

B

B

DTC P0502 Vehicle Speed Sensor (VSS) Circuit Low Input in Automatic Transaxle 4T65 - E

B

B

DTC P0503 Vehicle Speed Sensor (VSS) Circuit Intermittent in Automatic Transaxle 4T65 - E

B

B

DTC P0506 Idle Speed Low

B

B

DTC P0507 Idle Speed High

B

B

DTC P0530 Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit

C

C

DTC P0560 System Voltage

C

C

DTC P0601 Control Module Read Only Memory (ROM)

A

A

DTC P0602 Control Module Not Programmed

A

A

DTC P0620 Generator Performance

C

C

DTC P0711 TFT Sensor Circuit Range/Performance in Automatic Transaxle 4T65 - E

C

C

DTC P0712 Transmission Fluid Temperature (TFT) Sensor Circuit Low Input in Automatic Transaxle 4T65 - E

C

C

DTC P0713 Transmission Fluid Temperature (TFT) Sensor Circuit High Input in Automatic Transaxle 4T65 - E

C

C

DTC P0716 Input Speed Sensor Circuit Intermittent in Automatic Transaxle 4T65 - E

B

B

DTC P0717 Input Speed Sensor Circuit Low Input in Automatic Transaxle 4T65 - E

B

B

DTC P0719 Brake Switch Circuit Low Input in Automatic Transaxle 4T65 - E

C

C

DTC P0724 Brake Switch Circuit High Input in Automatic Transaxle 4T65 - E

C

C

DTC P0730 Incorrect Gear Ratio in Automatic Transaxle 4T65 - E

C

C

DTC P0741 TCC System Stuck Off in Automatic Transaxle 4T65 - E

B

B

DTC P0742 TCC System Stuck On in Automatic Transaxle 4T65 - E

A

A

DTC P0748 Pressure Control Solenoid Circuit Electrical in Automatic Transaxle 4T65 - E

C

C

DTC P0751 1-2 Shift Solenoid Valve Performance in Automatic Transaxle 4T65 - E

B

B

DTC P0753 1-2 Shift Solenoid Circuit Electrical in Automatic Transaxle 4T65 - E

B

B

DTC P0756 2-3 Shift Solenoid Valve Performance in Automatic Transaxle 4T65 - E

A

A

DTC P0758 2-3 Shift Solenoid Circuit Electrical in Automatic Transaxle 4T65 - E

A

A

DTC P1106 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage

C

C

DTC P1107 Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage

C

C

DTC P1111 Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage

C

C

DTC P1112 Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage

C

C

DTC P1114 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage

C

C

DTC P1115 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage

C

C

DTC P1121 Throttle Position (TP) Sensor Circuit Intermittent High Voltage

C

C

DTC P1122 Throttle Position (TP) Sensor Circuit Intermittent Low Voltage

C

C

DTC P1133 HO2S Insufficient Switching Sensor 1

B

B

DTC P1134 HO2S Transition Time Ratio Sensor 1

B

B

DTC P1336 Crankshaft Position (CKP) System Variation Not Learned

A

A

DTC P1351 Ignition Coil Control Circuit High Voltage

B

B

DTC P1352 Ignition Bypass Circuit High Voltage

B

B

DTC P1361 Ignition Control (IC) Circuit Low Voltage

B

B

DTC P1362 Ignition Bypass Circuit Low Voltage

B

B

DTC P1374 Crankshaft Position (CKP) High to Low Resolution Frequency Correlation

B

B

DTC P1380 Misfire Detected - Rough Road Data Not Available

C

C

DTC P1381 Misfire Detected - No Communication with Brake Control Module

C

C

DTC P1404 Exhaust Gas Recirculation (EGR) Closed Position Performance

B

B

DTC P1441 Evaporative Emission (EVAP) System Flow During Non-Purge

B

B

DTC P1546 Air Conditioning (A/C) Clutch Relay Control Circuit

C

C

DTC P1554 Cruise Control Feedback Circuit

C

C

DTC P1585 Cruise Control Inhibit Output Circuit

C

C

DTC P1602 Lost Communications with Brake/Traction Control (EBTCM) System

C

C

DTC P1604 Lost Communications with Driver Information and Displays Control (IPC) System

C

C

DTC P1605 Lost Communications with HVAC Control System

C

C

DTC P1610 Lost Communications with Body Multiple Control (BCM) System

C

C

DTC P1626 Theft Deterrent Fuel Enable Signal Lost

C

C

DTC P1630 Theft Deterrent Learn Mode Active

C

C

DTC P1631 Theft Deterrent Start Enable Signal Not Correct

C

C

DTC P1635 5 Volt Reference Circuit

B

B

DTC P1639 5 Volt Reference 2 Circuit

B

B

DTC P1810 TFP Valve Position Switch Circuit in Automatic Transaxle 4T65 - E

B

B

DTC P1811 Maximum Adapt and Long Shift in Automatic Transaxle 4T65 - E

C

C

DTC P1814 Torque Converter Overstressed in Automatic Transaxle 4T65 - E

B

B

DTC P1820 Internal Mode Switch Circuit A Low in Automatic Transaxle 4T65 - E

C

C

DTC P1822 Internal Mode Switch Circuit B High in Automatic Transaxle 4T65 - E

C

C

DTC P1823 Internal Mode Switch Circuit P Low in Automatic Transaxle 4T65 - E

C

C

DTC P1825 Internal Mode Switch - Invalid Range in Automatic Transaxle 4T65 - E

C

C

DTC P1860 TCC PWM Solenoid Circuit Electrical in Automatic Transaxle 4T65 - E

B

B

DTC P1887 TCC Release Switch Circuit in Automatic Transaxle 4T65 - E

B

B

DTC U1000 Class II Data Link Malfunction Refer to Class 2 Communication Malfunction in Data Link Communications

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DTC U1040 Loss of EBCM Communications Refer to DTC U1XXX Lost Communication with XXX in Data Link Communications

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DTC U1064 Loss of Communication with Body Control System Refer to DTC U1XXX Lost Communication with XXX in Data Link Communications

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