GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

DTC 001

DTC 002

DTC 003

DTC B0012, B0013, B0014, B0016, B0017, or B0018

Right Front/Passenger Frontal Deployment Loop Circuit

DTC B0022, B0024, B0026, B0042, B0043, or B0044

Left Front/Driver Frontal Deployment Loop Circuit

DTC B0028, B0029, or B0030

Right Front/Driver Side Deployment Loop Circuit

DTC B0040, B0041, or B0045

Left Front/Driver Side Deployment Loop Circuit

DTC B0051

Deployment Commanded

DTC B0053

Deployment Commanded with Loop Malfunctions Present

DTC B0077, B0078, B0079, B0080, B0081, or B0082

Side Impact Sensor (SIS) Circuit

DTC B0100, B0101, B0102, B0103, B0104, or B0105

Electronic Frontal Sensor Circuit

DTC B0145, B0428, or B3531

Auxiliary HAVC Actuator Circuit

DTC B0159 or B0164

Air Temperature Sensor Circuit

DTC B0174, B0179, B0510, or B0515

Discharge Air Temperature Sensor Circuit

DTC B0183 or B0188

Sunload Sensor Circuit

DTC B0229, B0414, B0424, B3761, or B3770

HVAC Actuator Circuit

DTC B0248, B0263, B0268, B0408, or B0418

HVAC Actuator Circuit

DTC B0248, B0263, B0408, or B0418

HVAC Actuator Circuit

DTC B0283

Electric Rear Defrost Circuit

DTC B0414, B0424, B3761, or B3770

HVAC Actuator Circuit

DTC B0540

Speedometer Circuit

DTC B0560

Tachometer Circuit

DTC B0770

All Wheel Drive (AWD) Indicator Circuit

DTC B0775

Four Wheel Drive High Range (4HI) Indicator Circuit

DTC B0780

Four Wheel Drive Low Range (4LO) Indicator Circuit

DTC B0785

Two Wheel Drive High Range (2HI) Indicator Circuit

DTC B0790

Transfer Case Neutral Indicator Circuit

DTC B0951

Dimming Circuit

DTC B1000

ECU Malfunction

DTC B1001

Option Configuration Error

DTC B1004

Keep Alive Memory (KAM) Reset

DTC B1007

Electronic Control Unit (ECU) Performance

DTC B1009

EEPROM Checksum Error

DTC B1017

Output Driver Module (ODM) 1 Performance

DTC B1023

Integral Switch Performance

DTC B1372

Device Ignition 1 (ON and START) Circuit Low

DTC B1375

Device Ignition 3 (ON) Circuit

DTC B1420

Device Voltage

DTC B1440

Power Mode Master Input Circuits Mismatch

DTC B1480

Battery Rundown Protection Circuit Malf

DTC B1550

Mirror Left Front or Right Front Select Switch Circuit

DTC B1720

Mirror Up and Down Control Switch Circuit

DTC B1721

Mirror Left and Right Control Switch Circuit

DTC B1723

Mirror Motor Control Circuit 1 Performance

DTC B1724

Mirror Motor Control Circuit 2 Performance

DTC B1735, B1740, B1745, B1750, B1755, B1760, B1815, or B1820

Power Seat Switch Circuit

DTC B1825, B1850, B1860, B2355, B2365, or B2375

Seat Position Sensor Circuit

DTC B1830, B1835, B1840, B1845, B2075, B2080, B2085, B2090, or B3905

Lumbar Switch Control Circuit

DTC B2425 or B2430

Seat Heater Circuit

DTC B2435 or B2440

Seat Back Heater Sensor

DTC B2455

Cellular Phone Microphone Circuit

DTC B2470

Cellular Phone Antenna Circuit

DTC B2476

Cellular Phone Select Service Switch Malfunction

DTC B2482

Cellular Phone Select Service Switch Range/Performance

DTC B2483 or B2484

Global Positioning System (GPS) Sensor Circuit

DTC B2527

Front Fog Lamp Circuit Low

DTC B2530

Front Foglamps Control Circuit

DTC B2540

Rear Foglamps Control Circuit

DTC B2550

Backup Lamps Control Circuit

DTC B2575

Headlamp Control Circuit

DTC B2580

Headlamp High Beam Control Circuit

DTC B2585

Parklamp Control Circuit Malfunction

DTC B2610

Passenger Compartment Dimming 1 Circuit

DTC B2615

Passenger Compartment Dimming 2 Circuit

DTC B2620

Display Dimming Input Circuit

DTC B2625

Display Dimming Pulse Width Modulation (PWM) Output Circuit

DTC B2645

Ambient Light Sensor Circuit

DTC B2697

Headlamp Washer Request Circuit

DTC B2725

ATC Mode Switch Circuit Malfunction

DTC B2734

Control Module Internal Performance

DTC B2815

Steering Wheel Controls Illegal Resistance Value

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 B2961

Key In Ignition Circuit Malfunction

DTC B3031

Key Decoder Device in Assem Learn Mode

DTC B3055

Key Not Present

DTC B3060

Unprogrammed Transponder Identification Code Received

DTC B3801

Passenger Compartment Lamp Request Circuit

DTC B3802

Parklamps Request Circuit

DTC B3808

Rear Door Lock Relay Circuit

DTC B3809

Rear Door Unlock Relay Circuit

DTC B3810 or B3811

Washer Relay Circuit

DTC B3819

Left Rear Power Window Up Relay Circuit

DTC B3820

Left Rear Power Window Down Relay Circuit

DTC B3821

Window Lockout Circuit Low

DTC B3822

Right Rear Power Window Up Relay Circuit

DTC B3823

Right Rear Power Window Down Relay Circuit

DTC B3824

Window Lockout Circuit Low

DTC B3935

Transponder Authentication Error

DTC C0221-C0227

Front Wheel Speed Sensor Circuit

DTC C0229

Drop Out of Front Wheel Speed Signals

DTC C0235-C0237or P0609

Rear Wheel Speed Sensor Circuit

DTC C0238

Wheel Speed Mismatch

DTC C0241-C0254

EBCM Control Valve Circuit

DTC C0265 or C0266

EBCM Relay Circuit

DTC C0267 or C0268

Pump Motor Circuit Open/Shorted

DTC C0269 or C0274

Excessive Dump/Isolation Time

DTC C0271-C0273, C0284

EBCM Malfunction

DTC C0279

Powertrain Configuration Not Valid

DTC C0281

Brake Switch Circuit

DTC C0283

Traction Switch Shorted to Ground

DTC C0287, P1644, or P1689

Delivered Torque Circuit

DTC C0290 or C0292

Lost Communications With PCM

DTC C0291

Lost Communications With BCM

DTC C0297

Powertrain Configuration Data Not Received

DTC C0298 or P1571

Powertrain Indicated Traction Control Malfunction

DTC C0300

Rear Speed Sensor Malfunction

DTC C0305

Front Speed Sensor Malfunction

DTC C0306

Motor A or B Circuit

DTC C0321

Transfer Case Lock Circuit

DTC C0327

Encoder Circuit Malfunction

DTC C0359

Four Wheel Drive Low Range (4LO) Discrete Output Circuit

DTC C0374

General System Malfunction

DTC C0379

Front Axle System

DTC C0550

ECU Malfunction

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 P0106

Manifold Absolute Pressure (MAP) Sensor Performance

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 P0120

Throttle Position (TP) Sensor 1 Circuit

DTC P0125

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

DTC P0128

Engine Coolant Temperature (ECT) Below Thermostat Regulating Temperature

DTC P0131 or P0151

HO2S Circuit Low Voltage

DTC P0132 or P0152

HO2S Circuit High Voltage

DTC P0133 or P0153

HO2S Slow Response

DTC P0134 or P0154

HO2S Circuit Insufficient Activity

DTC P0135, P0141, P0155, or P0161

HO2S Heater Performance

DTC P0137 or P0157

HO2S Circuit Low Voltage

DTC P0138 or P0158

HO2S Circuit High Voltage

DTC P0140 or P0160

HO2S Circuit Insufficient Activity

DTC P0171 or P0174

Fuel Trim System Lean

DTC P0172 or P0175

Fuel Trim System Rich

DTC P0200

Injector Control Circuit

DTC P0218

Transmission Fluid Overtemperature

DTC P0220

Throttle Position (TP) Sensor 2 Circuit

DTC P0230

Fuel Pump Relay Control Circuit

DTC P0300

Engine Misfire Detected

DTC P0315

Crankshaft Position (CKP) System Variation Not Learned

DTC P0325

Knock Sensor Module Performance

DTC P0327 or P0332

Knock Sensor Circuit

DTC P0335

Crankshaft Position (CKP) Sensor Circuit

DTC P0336

Crankshaft Position (CKP) Sensor Performance

DTC P0341

Camshaft Position (CMP) Sensor Performance

DTC P0342

Camshaft Position (CMP) Sensor Circuit Low Voltage

DTC P0343

Camshaft Position (CMP) Sensor Circuit High Voltage

DTC P0351-P0358

Ignition Coil Control Circuit

DTC P0420 or P0430

Catalyst System Low Efficiency

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 P0455

Evaporative Emission (EVAP) System Large Leak Detected

DTC P0461

Fuel Level Sensor Performance

DTC P0462

Fuel Level Sensor Circuit Low Voltage

DTC P0463

Fuel Level Sensor Circuit High Voltage

DTC P0480

Cooling Fan Relay Control Circuit

DTC P0483 or P0493

Cooling Fan System

DTC P0495

Cooling Fan Speed High

DTC P0496

Evaporative Emission (EVAP) System Flow During Non-Purge

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 P0522

Engine Oil Pressure (EOP) Switch Circuit Low Voltage

DTC P0523

Engine Oil Pressure (EOP) Sensor Circuit High Voltage

DTC P0526

Cooling Fan Speed Sensor Circuit

DTC P0530

Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit

DTC P0562

System Voltage Low

DTC P0563

System Voltage High

DTC P0567

Cruise Control Resume Switch Circuit

DTC P0568

Cruise Control Set Switch Circuit

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

ECU Malfunction

DTC P0608

Vehicle Speed Output Circuit

DTC P0621

Generator L-Terminal Circuit

DTC P0622

Generator F-Terminal Circuit

DTC P0641

5 Volt Reference 1 Circuit

DTC P0650

Malfunction Indicator Lamp (MIL) Control Circuit

DTC P0651

5 Volt Reference 2 Circuit

DTC P0654

Engine Speed Output Circuit

DTC P0705

Transmission Range (TR) Switch Circuit

DTC P0706

Transmission Range (TR) Switch Performance

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 P0719

Brake Switch Circuit Low Input

DTC P0724

Brake Switch Circuit High Input

DTC P0740

TCC Enable Solenoid Circuit Electrical

DTC P0741

Torque Converter Clutch (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

DTC P0752

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

DTC P0753

1-2 Shift Solenoid Circuit Electrical

DTC P0756

2-3 Shift Solenoid Valve Performance

DTC P0757

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

DTC P0758

2-3 Shift Solenoid Circuit Electrical

DTC P0785

3-2 Shift Solenoid Circuit Electrical

DTC P0894

Transmission Component Slipping

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 P1112

Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage

DTC P1114

Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage

DTC P1115

Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage

DTC P1125

Accelerator Pedal Position (APP) System

DTC P1133 or P1153

HO2S Insufficient Switching

DTC P1134

HO2S Transition Time Ratio Sensor 1

DTC P1137

HO2S Circuit Low Voltage During Power Enrichment Sensor 2

DTC P1138

HO2S Circuit High Voltage During Decel Fuel Cut-Off (DFCO) Sensor 2

DTC P1171

Fuel System Lean During Acceleration

DTC P1258

Engine Coolant Overtemperature - Protection Mode Active

DTC P1380

Misfire Detected - Rough Road Data Not Available

DTC P1381

Misfire Detected - No Communication with Brake Control Module

DTC P1481

Cooling Fan Speed Sensor Circuit

DTC P1482

Cooling Fan Speed Output Circuit

DTC P1484

Cooling Fan System Performance

DTC P1514

Throttle Body Performance

DTC P1515

Control Module Throttle Actuator Position Performance

DTC P1516

Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

DTC P1518

Throttle Actuator Control (TAC) Module Serial Data Circuit

DTC P1574

Stoplamp Switch Circuit

DTC P1626

Theft Deterrent Fuel Enable Signal Not Received

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 P1637

Generator L-Terminal Circuit

DTC P1638

Generator F-Terminal Circuit

DTC P1810

TFP Valve Position Switch Circuit

DTC P1860

TCC PWM Solenoid Circuit Electrical

DTC P1870

Transmission Component Slipping

DTC P1875

Four Wheel Drive (4WD) Low Switch Circuit

DTC P2108

Throttle Actuator Control (TAC) Module Performance

DTC P2120

Accelerator Pedal Position (APP) Sensor 1 Circuit

DTC P2121

Accelerator Pedal Position (APP) Sensor 1 Performance

DTC P2125

Accelerator Pedal Position (APP) Sensor 2 Circuit

DTC P2135

Throttle Position (TP) Sensor 1-2 Correlation

DTC U1000 and U1255

Class 2 Communication Malfunction

DTC U1001-U1254

Lost Communication with XXX

DTC U1300, U1301, or U1305

Class 2 Data Link Shorted

DTC U1500

Inter-device Dedicated Bus 1