GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

DTC B1016

Passenger Deployment Loop Resistance Low

DTC B1017

Passenger Deployment Loop Open

DTC B1018

Passenger Deployment Loop Voltage Out of Range

DTC B1022

Driver Deployment Loop Resistance Low

DTC B1024

Driver Deployment Loop Voltage Out of Range

DTC B1026

Driver Deployment Loop Open

DTC B1051

Deployment Commanded

DTC B1053

Deployment Commanded w/Loop Malfunction

DTC B1061

Lamp Circuit Failure

DTC B1071

Internal SDM Failure

DTC C1212

Class 2 Data Link Low

DTC C1213

Class 2 Data Link High

DTC C1214

System Relay Contact or Coil Circuit Open

DTC C1215

Idle Up Circuit Malfunction

DTC C1217

Pump Motor Shorted to Ground

DTC C1218

Pump Motor Circuit Shorted to Voltage or Motor Ground Open

DTC C1221-C1235

Wheel Speed Sensor Circuit

DTC C1236

Low System Supply Voltage

DTC C1237

High System Supply Voltage

DTC C1242 or C1243

Pump Motor Circuit

DTC C1254

Abnormal Shutdown Detected

DTC C1255 or C1256

ECU Malfunction

DTC C1257

Accelerometer Circuit Malfunction

DTC C1258

4WD Switch Circuit Open

DTC C1261-C1268

EBCM Internal Solenoid Circuit

DTC C1295

Brake Lamp Switch Circuit Open

DTC P0031

HO2S Heater Control Circuit Low Voltage Sensor 1

DTC P0032

HO2S Heater Control Circuit High Voltage Sensor 1

DTC P0037

HO2S Heater Control Circuit Low Voltage Sensor 2

DTC P0038

HO2S Heater Control Circuit High Voltage Sensor 2

DTC P0101

Mass Air Flow (MAF) Sensor Performance

DTC P0102

Mass Air Flow (MAF) Sensor Circuit Low Frequency

DTC P0103

Mass Air Flow (MAF) Sensor Circuit High Frequency

DTC P0107

Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

DTC P0108

Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

DTC P0111

Intake Air Temperature (IAT) Sensor Performance

DTC P0112

Intake Air Temperature (IAT) Sensor Circuit Low Voltage

DTC P0113

Intake Air Temperature (IAT) Sensor Circuit High Voltage

DTC P0116

Engine Coolant Temperature (ECT) Sensor Performance

DTC P0117

Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

DTC P0118

Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

DTC P0121

Throttle Position (TP) Sensor Performance

DTC P0122

Throttle Position (TP) Sensor Circuit Low Voltage

DTC P0123

Throttle Position (TP) Sensor Circuit High Voltage

DTC P0125

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

DTC P0128

Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature

DTC P0131

HO2S Circuit Low Voltage Sensor 1

DTC P0131 or P0151

HO2S Circuit Low Voltage

DTC P0132

HO2S Circuit High Voltage Sensor 1

DTC P0132 or P0152

HO2S Circuit High Voltage

DTC P0133

HO2S Slow Response Sensor 1

DTC P0133 or P0153

HO2S Slow Response

DTC P0134

HO2S Circuit Insufficient Activity Sensor 1

DTC P0134 or P0154

HO2S Circuit Insufficient Activity

DTC P0135 or P0155

HO2S Heater Performance

DTC P0137

HO2S Circuit Low Voltage Sensor 2

DTC P0137 or P0157

HO2S 1 Circuit Low Voltage

DTC P0138

HO2S Circuit High Voltage Sensor 2

DTC P0138 or P0158

HO2S 2 Circuit Low Voltage

DTC P0140

HO2S Circuit Insufficient Activity Sensor 2

DTC P0141

HO2S Heater Performance Sensor 2

DTC P0161

HO2S Heater Performance Bank 2 Sensor 2

DTC P0171

Fuel Trim System Lean

DTC P0172

Fuel Trim System Rich

DTC P0174

Fuel Trim System Lean Bank 2

DTC P0175

Fuel Trim System Rich Bank 2

DTC P0300

Engine Misfire Detected

DTC P0301-P0304

Engine Misfire Detected

DTC P0301-P0306

Engine Misfire Detected

DTC P0327

Knock Sensor (KS) Circuit

DTC P0328

Knock Sensor (KS) Circuit High Frequency

DTC P0335

Crankshaft Position (CKP) Sensor Circuit

DTC P0340

Camshaft Position (CMP) Sensor Circuit

DTC P0401

Exhaust Gas Recirculation (EGR) Flow Insufficient

DTC P0402

Exhaust Gas Recirculation (EGR) Flow Excessive

DTC P0403

Exhaust Gas Recirculation (EGR) Solenoid Control Circuit

DTC P0420

Catalyst System Low Efficiency

DTC P0420 or P0430

Catalyst System Low Efficiency

DTC P0441

Evaporative Emission (EVAP) System No Flow During Purge

DTC P0442

Evaporative Emission (EVAP) System Small Leak Detected

DTC P0443

EVAP System Incorrect Purge Flow

DTC P0444

Evaporative Emission (EVAP) Purge Solenoid Control Circuit Low Voltage

DTC P0445

Evaporative Emission (EVAP) Purge Solenoid Control Circuit High Voltage

DTC P0446

Evaporative Emission (EVAP) Vent System Performance

DTC P0447

Evaporative Emission (EVAP) Vent Solenoid Control Circuit Low Voltage

DTC P0448

Evaporative Emission (EVAP) Vent Solenoid Control Circuit High Voltage

DTC P0449

Evaporative Emission (EVAP) Vent Solenoid Control Circuit

DTC P0451

Fuel Tank Pressure Sensor Performance

DTC P0452

Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage

DTC P0453

Fuel Tank Pressure (FTP) Sensor Circuit High Voltage

DTC P0455

Evaporative Emission (EVAP) System Leak Detected

DTC P0456

Evaporative Emission (EVAP) System Very Small Leak Detected

DTC P0461

Fuel Level Sensor Performance

DTC P0463

Fuel Level Sensor Circuit High Voltage

DTC P0464

Fuel Level Sensor Performance

DTC P0496

Evaporative Emission (EVAP) System Flow During Non-Purge

DTC P0500

Vehicle Speed Sensor (VSS) Circuit

DTC P0505

Idle Control System

DTC P0506

Idle Speed Low

DTC P0507

Idle Speed High

DTC P0601-P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610

ECU Malfunction

DTC P0616

Starter Relay Control Circuit Low Voltage

DTC P0617

Starter Relay Control Circuit High Voltage

DTC P0705

Trans Range Switch Circuit

DTC P0707

Transmission Range (TR) Switch Circuit Low Voltage

DTC P0717

Input Speed Sensor Circuit Low Voltage

DTC P0720

Output Speed Sensor Circuit

DTC P0722

Output Speed Sensor Circuit Low Voltage

DTC P0741

TCC Solenoid Performance

DTC P0742

Torque Converter Clutch (TCC) System-Stuck On

DTC P0743

TCC Enable Solenoid Circuit Electrical

DTC P0751

Shift Solenoid #1 Performance

DTC P0752

1-2 Shift Solenoid (SS) Valve Performance - No Second Or Third Gear

DTC P0753

Shift Solenoid #1 Electrical

DTC P0756

Shift Solenoid #2 Performance

DTC P0757

2-3 Shift Solenoid (SS) Valve Performance - No Third Or Fourth Gear

DTC P0758

Shift Solenoid #2 Electrical

DTC P0973

Shift Solenoid (SS) 1 Control Circuit Low Voltage

DTC P0974

Shift Solenoid (SS) 1 Control Circuit High Voltage

DTC P0976

Shift Solenoid (SS) 2 Control Circuit Low Voltage

DTC P0977

Shift Solenoid (SS) 2 Control Circuit High Voltage

DTC P1510

Control Module Long Term Memory Reset

DTC P1740

Torque Reduction Signal Circuit

DTC P1875

4 Wheel Drive Switch Circuit

DTC P2025

Fuel Vapor Temperature Sensor Performance

DTC P2026

Fuel Vapor Temperature Sensor Circuit Low Voltage

DTC P2027

Fuel Vapor Temperature Sensor Circuit High Voltage

DTC P2227

Barometric Pressure (BARO) Sensor Performance

DTC P2228

Barometric Pressure (BARO) Sensor Circuit Low Voltage

DTC P2229

Barometric Pressure (BARO) Sensor Circuit High Voltage

DTC P2231, P2232, P2234, or P2235

HO2S Signal Circuit Shorted to Heater Circuit

DTC P2769

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

DTC P2770

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