GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

DTC B0016, B0017, or B0018

Right Front/Passenger Frontal Deployment Loop (Stage 1) Circuit

DTC B0022, B0024, or B0026

Left Front/Driver Frontal Deployment Loop (Stage 1) Circuit

DTC B0051

Deployment Commanded

DTC B0053

Deployment Commanded with Loop Malfunctions Present

DTC B1000

BCM Malfunction

DTC B1001

Option Configuration Error

DTC B1009

EEPROM Checksum Mismatch

DTC B1025, B1035, B1045, or B1055

Audio Output Circuit

DTC B1327

Device Power Circuit Low

DTC B1369

Ignition 0 Fault

DTC B1374

Ignition 1 Fault

DTC B1379

Ignition 3 Fault

DTC B1780

Theft Lock Enabled

DTC B2532

Front Foglamp Relay Out Short to Ground/Open

DTC B2533

Front Foglamp Relay Output Short to Bat

DTC B2558

Interior Lamp Control Output Short to Battery

DTC B2575

Headlamp Request/Feedback Mismatch

DTC B2577

Headlamp Control Circuit Low

DTC B2578

Headlamp Relay Output Short to Battery

DTC B2585

Parklamp Control Circuit Malfunction

DTC B2587

Parklamp Relay Output Short to Ground/Op

DTC B2588

Parklamp Relay Output Short to Battery

DTC B2600

DRL Error

DTC B2601

Daytime Running Lamp Control Circuit Range/Performance

DTC B2602

DRL Relay Output Short to Ground/Open

DTC B2603

DRL Relay Output Short to Battery

DTC B2647

Ambient Light Sensor Circuit Low

DTC B2648

Ambient Light Sensor Circuit High

DTC B2752

Horn Relay Coil Circuit Low

DTC B2753

Horn Relay Coil Circuit High

DTC B2947

Security System Sensor Power CKT Low

DTC B2948

Security System Sensor Power CKT High

DTC B2957

Security System Sensor Data Circuit Low

DTC B2958

Security System Sensor Data Circuit High

DTC B2960

Sec Sys Sensor Data Incorrect but Valid

DTC B2965

Key In Ignition Fault

DTC B3031

Security System Controller in Learn Mode

DTC B3033

Security System Indicates Tamper

DTC B3127 or B3128

Driver Door Unlock Circuit

DTC B3132 or B3133

Door Unlock Circuit

DTC B3137 or B3138

All Door Lock Circuit

DTC B3267

Decklid Relay Output Short to Ground/Open

DTC B3268

Decklid Relay Output Short to Battery

DTC C0267

Low Brake Fluid

DTC C1214

System Relay Contact or Coil Circuit Open

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 C1261-C1268

EBCM Internal Solenoid Circuit

DTC C1295

Brake Lamp Switch Circuit Open

DTC P0030

HO2S Heater Control Circuit Sensor 1

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 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 P0130

HO2S Circuit Closed Loop (CL) Performance Sensor 1

DTC P0131

HO2S Circuit Low Voltage Sensor 1

DTC P0132

HO2S Circuit High Voltage Sensor 1

DTC P0133

HO2S Slow Response Sensor 1

DTC P0134

HO2S Circuit Insufficient Activity Sensor 1

DTC P0135

HO2S Heater Performance Sensor 1

DTC P0137

HO2S Circuit Low Voltage Sensor 2

DTC P0138

HO2S Circuit High Voltage Sensor 2

DTC P0140

HO2S Circuit Insufficient Activity Sensor 2

DTC P0141

HO2S Heater Performance Sensor 2

DTC P0171

Fuel Trim System Lean

DTC P0172

Fuel Trim System Rich

DTC P0201-P0206

Injector Control Circuit

DTC P0218

Transmission Fluid Overtemperature

DTC P0230

Fuel Pump Relay Control Circuit

DTC P0300

Engine Misfire Detected

DTC P0325

Knock Sensor Module Performance

DTC P0327

Knock Sensor (KS) Circuit

DTC P0336

Crankshaft Position (CKP) Sensor Circuit

DTC P0341

Camshaft Position (CMP) Sensor Performance

DTC P0401

Exhaust Gas Recirculation (EGR) Flow Insufficient

DTC P0403

Exhaust Gas Recirculation (EGR) Solenoid Control Circuit

DTC P0404

Exhaust Gas Recirculation (EGR) Open Position Performance

DTC P0405

Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Voltage

DTC P0420

Catalyst System Low Efficiency

DTC P0440

Evaporative Emission (EVAP) System

DTC P0442

Evaporative Emission (EVAP) System Small Leak Detected

DTC P0443

Evaporative Emission (EVAP) Purge Solenoid Control Circuit

DTC P0446

Evaporative Emission (EVAP) Vent System Performance

DTC P0449

Evaporative Emission (EVAP) Vent Solenoid Control Circuit

DTC P0452

Fuel Tank Pressure Sensor Circuit Low Voltage

DTC P0453

Fuel Tank Pressure Sensor Circuit High Voltage

DTC P0462

Fuel Level Sensor Circuit Low Voltage

DTC P0463

Fuel Level Sensor Circuit High Voltage

DTC P0480 or P0481

Cooling Fan Relay Control Circuit

DTC P0502

Vehicle Speed Sensor (VSS) Circuit Low Input

DTC P0503

Vehicle Speed Sensor (VSS) Circuit Intermittent

DTC P0506

Idle Speed Low

DTC P0507

Idle Speed High

DTC P0530

Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit

DTC P0560

System Voltage

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

ECU Malfunction

DTC P0620

Generator Performance

DTC P0650

Malfunction Indicator Lamp (MIL) Control Circuit

DTC P0711

TFT Sensor Circuit Range/Performance

DTC P0712

Transmission Fluid Temperature (TFT) Sensor Circuit Low Input

DTC P0713

Transmission Fluid Temperature (TFT) Sensor Circuit High Input

DTC P0716

Input Speed Sensor Circuit Intermittent

DTC P0717

Input Speed Sensor Circuit Low Input

DTC P0719

Brake Switch Circuit Low Input

DTC P0724

Brake Switch Circuit High Input

DTC P0730

Incorrect Gear Ratio

DTC P0741

TCC System Stuck Off

DTC P0742

TCC System Stuck On

DTC P0748

Pressure Control Solenoid Circuit Electrical

DTC P0751

1-2 Shift Solenoid Valve Performance - No First or Fourth Gear

DTC P0752

1-2 Shift Solenoid Valve Performance - No Second or Third Gear

DTC P0753

1-2 Shift Solenoid Circuit Electrical

DTC P0756

2-3 Shift Solenoid Valve Performance - No First or Second Gear

DTC P0757

2-3 Shift Solenoid Valve Performance - No Third or Fourth Gear

DTC P0758

2-3 Shift Solenoid Circuit Electrical

DTC P1106

Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage

DTC P1107

Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage

DTC P1111

Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage

DTC P1114

Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage

DTC P1121

Throttle Position (TP) Sensor Circuit Intermittent High Voltage

DTC P1122

Throttle Position (TP) Sensor Circuit Intermittent Low Voltage

DTC P1133

HO2S Insufficient Switching Sensor 1

DTC P1134

HO2S Transition Time Ratio Sensor 1

DTC P1189

Engine Oil Pressure (EOP) Switch Circuit

DTC P1336

Crankshaft Position (CKP) System Variation Not Learned

DTC P1351

Ignition Coil Control Circuit High Voltage

DTC P1352

Ignition Bypass Circuit High Voltage

DTC P1361

Ignition Control (IC) Circuit Low Voltage

DTC P1362

Ignition Bypass 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

Exhaust Gas Recirculation (EGR) Closed Position Performance

DTC P1441

Evaporative Emission (EVAP) System Flow During Non-Purge

DTC P1546

Air Conditioning (A/C) Clutch Relay Control Circuit

DTC P1554

Cruise Control Feedback Circuit

DTC P1585

Cruise Control Inhibit Output Circuit

DTC P1626

Theft Deterrent Fuel Enable Signal Lost

DTC P1630

Theft Deterrent Learn Mode Active

DTC P1631

Theft Deterrent Start Enable Signal Not Correct

DTC P1632

Theft Deterrent Start Disable Signal Received

DTC P1635

5 Volt Reference 1 Circuit

DTC P1639

5 Volt Reference 2 Circuit

DTC P1640

Control Module Output A Circuit

DTC P1650

Control Module Output B Circuit

DTC P1660

Control Module Output C Circuit

DTC P1670

Control Module Output D Circuit

DTC P1810

TFP Valve Position Switch Circuit

DTC P1811

Maximum Adapt and Long Shift

DTC P1815

Transmission Fluid Pressure (TFP) Valve Position Switch - Start in Wrong Range

DTC P1816

Transmission Fluid Pressure (TFP) Valve Position Switch Indicates Park/Neutral (P/N) With Drive Ratio

DTC P1817

Transmission Fluid Pressure (TFP) Valve Position Switch-Reverse With Drive Ratio

DTC P1818

Transmission Fluid Pressure (TFP) Valve Position Switch Indicates Drive Without Drive Ratio

DTC P1860

TCC PWM Solenoid Circuit Electrical

DTC P1887

TCC Release Switch Circuit

DTC U1000 and U1255

Class 2 Communication Malfunction

DTC U1001-U1254

Loss of XXX Communications

DTC U1300, U1301, or U1305

Class 2 Data Link Shorted

DTC U2000-U2007

General Serial Peripheral Interface (SPI) Circuit