GM Service Manual Online
For 1990-2009 cars only

Diagnostic Trouble Code (DTC)

Type

P0030 HO2S Heater Control Circuit Bank 1 Sensor 1

A

P0036 HO2S Heater Control Circuit Bank 1 Sensor 2

A

P0050 HO2S Heater Control Circuit Bank 2 Sensor 1

A

P0056 HO2S Heater Control Circuit Bank 2 Sensor 2

A

P0096 Intake Air Temperature (IAT) Sensor 2 Performance

B

P0097 Intake Air Temperature (IAT) Sensor 2 Circuit Low Voltage

A

P0098 Intake Air Temperature (IAT) Sensor 2 Circuit High Voltage

A

P0107 Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

A

P0108 Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

A

P0112 Intake Air Temperature (IAT) Sensor 1 Circuit Low Voltage

A

P0113 Intake Air Temperature (IAT) Sensor 1 Circuit High Voltage

A

P0116 Engine Coolant Temperature (ECT) Sensor 1 Performance

B

P0117 Engine Coolant Temperature (ECT) Sensor 1 Circuit Low Voltage

A

P0118 Engine Coolant Temperature (ECT) Sensor 1 Circuit High Voltage

A

P0122 Throttle Position (TP) Sensor Circuit Low Voltage

A

P0123 Throttle Position (TP) Sensor Circuit High Voltage

A

P0125 Engine Coolant Temperature (ECT) Excessive Time to Closed Loop Fuel Control

B

P0128 Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature

B

P0132 Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 1

A

P0133 Heated Oxygen Sensor (HO2S) Slow Response Bank 1 Sensor 1

B

P0135 Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 1

A

P0137 Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 1 Sensor 2

A

P0138 Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 2

A

P0139 HO2S Slow Response Bank 1 Sensor 2

B

P0141 Heated Oxygen Sensor (HO2S) Heater Performance Bank 1 Sensor 2

A

P0152 Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 2 Sensor 1

A

P0153 Heated Oxygen Sensor (HO2S) Slow Response Bank 2 Sensor 1

B

P0155 Heated Oxygen Sensor (HO2S) Heater Performance Bank 2 Sensor 1

A

P0157 Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 2

A

P0158 Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 2 Sensor 2

A

P0159 Slow Response Bank 2 Sensor 2

B

P0161 Heated Oxygen Sensor (HO2S) Heater Performance Bank 2 Sensor 2

A

P0171 Fuel Trim System Lean Bank 1

B

P0172 Fuel Trim System Rich Bank 1

B

P0174 Fuel Trim System Lean Bank 2

B

P0175 Fuel Trim System Rich Bank 2

B

P0201 Injector 1 Control Circuit

A

P0202 Injector 2 Control Circuit

A

P0203 Injector 3 Control Circuit

A

P0204 Injector 4 Control Circuit

A

P0205 Injector 5 Control Circuit

A

P0206 Injector 6 Control Circuit

A

P0218 Transmission Fluid Overtemperature

C

P0222 Throttle Position (TP) Sensor 2 Circuit Low Voltage

A

P0223 Throttle Position (TP) Sensor 2 Circuit High Voltage

A

P0300 Engine Misfire Detected

B

P0301 Cylinder 1 Misfire Detected

B

P0302 Cylinder 2 Misfire Detected

B

P0303 Cylinder 3 Misfire Detected

B

P0304 Cylinder 4 Misfire Detected

B

P0305 Cylinder 5 Misfire Detected

B

P0306 Cylinder 6 Misfire Detected

B

P0325 Knock Sensor (KS) Circuit

A

P0335 Crankshaft Position (CKP) Sensor A Circuit

A

P0336 Crankshaft Position (CKP) Sensor A Performance

A

P0340 Camshaft Position (CMP) Sensor Circuit

A

P0341 Camshaft Position (CMP) Sensor Performance

A

P0385 Crankshaft Position (CKP) Sensor B Circuit

A

P0386 Crankshaft Position (CKP) Sensor B Performance

A

P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient

B

P0403 Exhaust Gas Recirculation (EGR) Solenoid Control Circuit

A

P0404 Exhaust Gas Recirculation (EGR) Open Position Performance

B

P0406 Exhaust Gas Recirculation (EGR) Position Sensor Circuit High Voltage

A

P0420 Three Way Catalyst (TWC) System Low Efficiency Bank 1

B

P0430 Three Way Catalyst (TWC) System Low Efficiency Bank 2

B

P0442 Evaporative Emission (EVAP) System Small Leak Detected

B

P0443 Evaporative Emission (EVAP) Purge Solenoid Control Circuit

A

P0446 Evaporative Emission (EVAP) Vent System Performance

B

P0452 Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage

B

P0453 Fuel Tank Pressure (FTP) Sensor Circuit High Voltage

B

P0455 Evaporative Emission (EVAP) System Large Leak Detected

B

P0456 Evaporative Emission (EVAP) System Very Small Leak Detected

A

P0461 Fuel Level Sensor Performance

B

P0462 Fuel Level Sensor Circuit Low Voltage

B

P0463 Fuel Level Sensor Circuit High Voltage

B

P0496 Evaporative Emission (EVAP) System Flow During Non-Purge

B

P0498 Evaporative Emission (EVAP) Vent Solenoid Control Circuit Low Voltage

A

P0499 Evaporative Emission (EVAP) Vent Solenoid Control Circuit High Voltage

A

P0501 Vehicle Speed Sensor (VSS) Performance

A

P0502 Vehicle Speed Sensor (VSS) Circuit Low Voltage

A

P0503 Vehicle Speed Sensor (VSS) Circuit Intermittent

B

P0506 Idle Speed Low

B

P0507 Idle Speed High

B

P0520 Engine Oil Pressure (EOP) Switch Control

C

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

B

P0562 System Voltage Low

D

P0563 System Voltage High

D

P0567 Cruise Control Resume Switch Circuit

C

P0568 Cruise Control Set Switch Circuit

C

P0571 Cruise Control Brake Switch Circuit

C

P0602 Control Module Not Programmed

A

P0621 Generator L-Terminal Circuit

C

P0622 Generator F-Terminal Circuit

C

P0628 Fuel Pump Relay Control Circuit Low Voltage

A

P0629 Fuel Pump Relay Control Circuit High Voltage

A

P0641 5 Volt Reference 1 Circuit

A

P0646 Air Conditioning (A/C) Clutch Relay Control Circuit Low Voltage

D

P0647 Air Conditioning (A/C) Clutch Relay Control Circuit High Voltage

D

P0651 5 Volt Reference 2 Circuit

A

P0685 Engine Controls Ignition Relay Control Circuit

A

P0688 Engine Controls Ignition Relay Feedback Circuit

C

P0691 Cooling Fan Relay 1 Control Circuit Low Voltage

C

P0692 Cooling Fan Relay 1 Control Circuit High Voltage

C

P0693 Cooling Fan Relay 2 Control Circuit Low Voltage

C

P0694 Cooling Fan Relay 2 Control Circuit High Voltage

C

P0705 Transmission Range (TR) Sensor Circuit

A

P0706 Transmission Range (TR) Switch Performance

B

P0711 Transmission Fluid Temperature (TFT) Sensor Performance

C

P0712 Transmission Fluid Temperature (TFT) Sensor Circuit Low Voltage

C

P0713 Transmission Fluid Temperature (TFT) Sensor Circuit High Voltage

C

P0716 Input Speed Sensor Performance

A

P0717 Input/Turbine Speed Sensor Circuit Low Voltage

A

P0718 Input Speed Sensor Circuit Intermittent

B

P0731 Incorrect 1st Gear Ratio

C

P0732 Incorrect 2nd Gear Ratio

C

P0733 Incorrect 3rd Gear Ratio

C

P0734 Incorrect 4th Gear Ratio

C

P0735 Incorrect 5th Gear Ratio

C

P0741 Torque Converter Clutch (TCC) Circuit Performance or Stuck Off

B

P0746 Clutch Pressure Control (PC) Solenoid 1- Stuck Off

B

P0747 Clutch Pressure Control (PC) Solenoid 1-Stuck On

B

P0751 Shift Solenoid (SS) 1 Valve Performance or Stuck Off

B

P0752 Shift Solenoid (SS) 1 Valve Performance or Stuck On

B

P0756 Shift Solenoid (SS) 2 Valve Performance or Stuck Off

B

P0757 Shift Solenoid (SS) 2 Valve Performance or Stuck On

B

P0761 Shift Solenoid (SS) 3 Valve Performance or Stuck Off

B

P0762 Shift Solenoid (SS) 3 Valve Performance or Stuck On

B

P0776 Clutch Pressure Control (PC) Solenoid 2 Stuck Off

B

P0777 Clutch Pressure Control (PC) Solenoid 2 Stuck On

B

P0780 Incorrect Shift Pattern

B

P0847 Transmission Fluid Pressure (TFP) Switch 2 Circuit Low Voltage

C

P0848 Transmission Fluid Pressure (TFP) Switch 2 Circuit High Voltage

C

P0872 Transmission Fluid Pressure (TFP) Switch 3 Circuit Low Voltage

C

P0873 Transmission Fluid Pressure (TFP) Switch 3 High Voltage

C

P0962 Clutch Pressure Control (PC) Solenoid 1 Control Circuit Low Voltage

A

P0963 Clutch Pressure Control (PC) Solenoid 1 Control Circuit High Voltage

A

P0966 Clutch Pressure Control (PC) Solenoid 2 Control Circuit Low Voltage

A

P0967 Clutch Pressure Control (PC) Solenoid 2 Control Circuit High Voltage

A

P0973 Shift Solenoid (SS) 1 Control Circuit Low Voltage

A

P0974 Shift Solenoid (SS) 1 Control Circuit High Voltage

A

P0976 Shift Solenoid (SS) 2 Control Circuit Low Voltage

A

P0977 Shift Solenoid (SS) 2 Control Circuit High Voltage

A

P0979 Shift Solenoid (SS) 3 Control Circuit Low Voltage

A

P0980 Shift Solenoid (SS) 3 Control Circuit High Voltage

A

P1126 Engine Coolant Temperature (ECT) Sensor Performance in Cold Temperatures

B

P1128 Manifold Absolute Pressure (MAP) Sensor Low Pressure

B

P1129 Manifold Absolute Pressure (MAP) Sensor High Pressure

B

P1574 Stoplamp Switch Circuit

C

P1621 Control Module Long Term Memory Performance

A

P1630 Theft Deterrent Learn Mode Active

C

P1631 Theft Deterrent Start Enable Signal Not Correct

C

P2100 Throttle Actuator Control (TAC) Motor Control Circuit

A

P2101 Throttle Actuator Position Performance

A

P2108 Throttle Actuator Control (TAC) Module Performance

A

P2111 Throttle Actuator Control (TAC) Throttle Valve Stuck Open

A

P2112 Throttle Actuator Control (TAC) Throttle Valve Stuck Closed

A

P2122 Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

A

P2123 Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

A

P2127 Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

A

P2128 Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

A

P2135 Throttle Position (TP) Sensor 1-2 Correlation

A

P2138 Accelerator Pedal Position (APP) Sensor 1-2 Correlation

A

P2176 Minimum Throttle Position Not Learned

A

P2183 Engine Coolant Temperature (ECT) Sensor 2 Performance

B

P2184 Engine Coolant Temperature (ECT) Sensor 2 Circuit Low Voltage

A

P2185 Engine Coolant Temperature (ECT) Sensor 2 Circuit High Voltage

A

P2199 Intake Air Temperature (IAT) Sensor 1-2 Correlation

B

P2227 Barometric Pressure (BARO) Sensor Performance

B

P2228 Barometric Pressure (BARO) Sensor Circuit Low Voltage

A

P2229 Barometric Pressure (BARO) Sensor Circuit High Voltage

A

P2238 HO2S Pumping Current Control Circuit Low Voltage Bank 1 Sensor 1

A

P2239 HO2S Pumping Current Control Circuit High Voltage Bank 1 Sensor 1

A

P2241 HO2S Pumping Current Control Circuit Low Voltage Bank 2 Sensor 1

A

P2242 HO2S Pumping Current Control Circuit High Voltage Bank 2 Sensor1

A

P2243 HO2S Reference Voltage Circuit Bank 1 Sensor 1

A

P2245 HO2S Reference Voltage Circuit Low Voltage Bank 1 Sensor 1

A

P2247 HO2S Reference Voltage Circuit Bank 2 Sensor 1

A

P2249 HO2S Reference Voltage Circuit Low Voltage Bank 2 Sensor 1

A

P2252 HO2S Reference Ground Circuit Low Voltage Bank 1 Sensor 1

A

P2253 HO2S Reference Ground Circuit High Voltage Bank 1 Sensor 1

A

P2255 HO2S Reference Ground Circuit Low Voltage Bank 2 Sensor 1

A

P2256 HO2S Reference Ground Circuit High Voltage Bank 2 Sensor 1

A

P2270 HO2S Signal Stuck Lean Bank 1 Sensor 2

B

P2271 HO2S Signal Stuck Rich Bank 1 Sensor 2

B

P2272 HO2S Signal Stuck Lean Bank 2 Sensor 2

B

P2273 HO2S Signal Stuck Rich Bank 2 Sensor 2

B

P2282 Intake Manifold Air Leak

B

P2297 HO2S Performance During Decel Fuel Cut-Off (DFCO) Bank 1 Sensor 1

B

P2298 HO2S Performance During Decel Fuel Cut-Off (DFCO) Bank 2 Sensor 1

B

P2413 Exhaust Gas Recirculation (EGR) System Performance

B

P2414 HO2S Exhaust Sample Bank 1 Sensor 1

A

P2415 HO2S Exhaust Sample Bank 2 Sensor 1

A

P2553 Throttle Actuator Control (TAC) Inhibit Control Performance

A

P2554 Throttle Actuator Control (TAC) Inhibit Circuit Low Voltage

A

P2555 Throttle Actuator Control (TAC) Inhibit Circuit High Voltage

A

P2610 Control Module Ignition Off Timer Performance

A

P2627 HO2S Pumping Current Trim Circuit Low Voltage Bank 1 Sensor 1

A

P2628 HO2S Pumping Current Trim Circuit High Voltage Bank 1 Sensor 1

A

P2630 HO2S Pumping Current Trim Circuit Low Voltage Bank 2 Sensor 1

A

P2631 HO2S Pumping Current Trim Circuit High Voltage Bank 2 Sensor 1

A

P2646 Intake Rocker Arm Actuator System Stuck Off

A

P2647 Intake Rocker Arm Actuator System Stuck On

A

P2648 Intake Rocker Arm Actuator Solenoid Control Circuit Low Voltage

A

P2649 Intake Rocker Arm Actuator Solenoid Control Circuit High Voltage

A

P2763 Torque Convertor Clutch (TCC) Pressure Control (PC) Solenoid Control Circuit High Voltage

A

P2764 Torque Convertor Clutch (TCC) Pressure Control (PC) Solenoid Control Circuit Low Voltage

A

P2769 Torque Converter Clutch (TCC) Enable Solenoid Control Circuit Low Voltage

A

P2770 Torque Converter Clutch (TCC) Enable Solenoid Control Circuit High Voltage

A

U0107 Lost Communication With Throttle Actuator Control (TAC) Module

A