GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

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

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

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

Left Front/Driver Frontal Deployment Loop (Stage 1) 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 Malfunction Present

DTC B0057, B0058, or B0059

Left Front/Driver Frontal Deployment Loop (Stage 2) Open

DTC B0064, B0065, or B0066

Left Front/Driver Frontal Deployment Loop (Stage 2) Open

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

Left Front/Driver Frontal Deployment Loop (Stage 2) Open

DTC B0285

Electric Rear Defrost Circuit Low

DTC B1000

ECU Malfunction

DTC B1001

Option Configuration Error

DTC B1004

Keep Alive Memory (KAM) Reset

DTC B1009

EEPROM Checksum Mismatch

DTC B1025, B1035, B1045, or B1055

Audio [+] Output Circuit

DTC B1030, B1040, B1050, or B1060

Audio [-] Output Circuit

DTC B1259

Antenna Ground Circuit

DTC B1325

Device Power Circuit

DTC B1327

Device Power 1 Circuit Low

DTC B1328

Device Power 1 Circuit High

DTC B1372, B1373, or B1374

Device Ignition 1 Circuit

DTC B1382, B1383, or B1384

Device Ignition ACCESSORY Circuit

DTC B1441, B1442, or B1443

Device Ignition OFF, RUN, and CRANK Circuit

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 B2558

Passenger Compartment Lamp Control Circuit High

DTC B2613

Passenger Compartment Dimming 1 Circuit High

DTC B2627

Display Dimming Pulse Width Modulation (PWM) Output Circuit Low

DTC B2647

Ambient Light Sensor Circuit Low

DTC B2648

Ambient Light Sensor Circuit High

DTC B2707

Gearshift Unlock Circuit Low

DTC B2709

Gearshift Unlock Circuit Open

DTC B2957

Security System Sensor Data Circuit Low

DTC B2958

Security System Sensor Data Circuit High

DTC B2960

Security System Sensor Data Incorrect But Valid

DTC B3031

Security System Controller in Learn Mode

DTC B3033

Security System Indicates Tamper

DTC B3109

Keyless Entry Transmitter Low Battery

DTC B3127

LF Door Only Unlock Circuit Low

DTC B3132

All Door Unlock Circuit Low

DTC B3137

All Door Lock Circuit Low

DTC B3267

Trunk Release Output Circuit Low

DTC B3268

Trunk Release Output Circuit High

DTC B3715, B3716, B3717, B3718, or B3719

Front Wiper Relay Drive Circuit

DTC B3948

Left Front Turn Signal Circuit

DTC B3949

Right Front Turn Signal Circuit

DTC B3950

Left Rear Turn Signal Circuit

DTC B3951

Right Rear Turn Signal Circuit

DTC C0000

Vehicle Speed Information Circuit Malfunction

DTC C0035-C0051

Wheel Speed Sensor Circuit

DTC C0060-C0095

EBCM Malfunction

DTC C0110

Pump Motor Circuit Malfunction

DTC C0121

Valve Relay Circuit Malfunction

DTC C0161

ABS/TCS Brake Switch Circuit Malfunction

DTC C0245

Wheel Speed Sensor Frequency Error

DTC C0267

Low Brake Fluid Indicated

DTC C0475

Electric Steering Motor Circuit

DTC C0476

Electric Steering Motor Circuit Performance

DTC C0545

Steering Wheel Torque Input Sensor

DTC C0550

ECU Malfunction

DTC C0847

Device Ignition 1 Circuit Low

DTC C0848

Device Ignition 1 Circuit High

DTC C0896

Device Voltage Range/Performance

DTC C0896

Device Voltage Range/Performance

DTC C0899

Device 1 Voltage Low

DTC C0900

Device 1 Voltage High

DTC P0031 or P0037

HO2S Heater Control Circuit Low Voltage

DTC P0032 or P0038

HO2S Heater Control Circuit High Voltage

DTC P0106

Manifold Absolute Pressure (MAP) Sensor Circuit

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 P0117

Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

DTC P0118

Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

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 or P0141

HO2S Heater Performance

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 P0171

Fuel Trim System Lean

DTC P0172

Fuel Trim System Rich

DTC P0200

Injector Control Circuit

DTC P0217

Engine Coolant Overtemperature

DTC P0218

Trans. OvertemP0

DTC P0261, P0264, P0267, or P0270

Injector Control Circuit Low Voltage

DTC P0262, P0265, P0268, or P0271

Injector Control Circuit High Voltage

DTC P0300

Engine Misfire Detected

DTC P0315

Crankshaft Position System Variation Not Learned (CASE)

DTC P0324

Knock Sensor (KS) Module Performance

DTC P0326

Knock Sensor (KS) Performance

DTC P0327

Knock Sensor (KS) Circuit

DTC P0336

Crankshaft Position (CKP) Sensor Performance

DTC P0340

Camshaft Position (CMP) Sensor Circuit

DTC P0341

Camshaft Position (CMP) Sensor Performance

DTC P0351

Ignition Coil 1 and 4 Control Circuit

DTC P0352

Ignition Coil 2 and 3 Control Circuit

DTC P0420

Catalyst System Low Efficiency

DTC P0442

Evaporative Emission (EVAP) System Small Leak Detected

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 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 P0458

Evaporative Emission (EVAP) Purge Solenoid Control Circuit Low Voltage

DTC P0461

Fuel Level Sensor Performance

DTC P0462

Fuel Level Sensor Circuit Low Voltage

DTC P0463

Fuel Level Sensor Circuit High Voltage

DTC P0480 or P0691

Cooling Fan Speed Output Circuit

DTC P0496

Evaporative Emission (EVAP) System Flow During Non-Purge

DTC P0498

Evaporative Emission (EVAP) Vent Solenoid Control Circuit Low Voltage

DTC P0499

Evaporative Emission (EVAP) Vent Solenoid Control Circuit High Voltage

DTC P0500

Vehicle Speed Signal

DTC P0506

Idle Speed Low

DTC P0507

Idle Speed High

DTC P0508

Idle Air Control (IAC) Valve Control Circuit Low Voltage

DTC P0509

Idle Air Control (IAC) Valve Control Circuit High Voltage

DTC P0520

Engine Oil Pressure (EOP) Switch Circuit

DTC P0532 or P0533

Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit

DTC P0562

System Voltage Low

DTC P0563

System Voltage High

DTC P0565

Cruise Control Switch Circuit

DTC P0572

Cruise Control Brake Switch Circuit Low Voltage

DTC P0573

Cruise Control Brake Switch Circuit High Voltage

DTC P0601, P0602, P0603, or P0604

ECU Malfunction

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

ECU Malfunction

DTC P0606

ECM Internal Performance

DTC P0616

Starter Relay Control Circuit Low Voltage

DTC P0617

Starter Relay Control Circuit High Voltage

DTC P0621

Generator L-Terminal Circuit

DTC P0622

Generator F-Terminal Circuit

DTC P0628

Fuel Pump Relay Control Circuit Low Voltage

DTC P0629

Fuel Pump Relay Control Circuit High Voltage

DTC P0630

VIN Information Error

DTC P0641

5-Volt Reference Circuit

DTC P0646 or P0647

Air Conditioning (A/C) Clutch Relay Control Circuit

DTC P0650

Malfunction Indicator Lamp (MIL) Control Circuit

DTC P0700

Transmission Control System

DTC P0703

Brake Switch Circuit

DTC P0705

Transmission Range Switch Circuit

DTC P0711

Transmission Fluid Temperature (TFT) Sensor Performance

DTC P0712

Transmission Fluid Temperature (TFT) Sensor Circuit Low Voltage

DTC P0713

Transmission Fluid Temperature (TFT) Sensor Circuit High Voltage

DTC P0716

Input Speed Sensor Performance

DTC P0717

Input Speed Sensor Circuit Low Voltage

DTC P0719

Brake Switch Circuit Low Voltage

DTC P0722

VSS Circuit Low

DTC P0723

Output Speed Sensor Circuit Intermittent

DTC P0724

Brake Switch Circuit High Voltage

DTC P0727

Engine Speed-No Signal

DTC P0730

Incorrect Gear Ratio

DTC P0731

Incorrect 1st Gear Ratio

DTC P0732

Incorrect 2nd Gear Ratio

DTC P0733

Incorrect 3rd Gear Ratio

DTC P0734

Incorrect 4th Gear Ratio

DTC P0735

Incorrect 5th Gear Ratio

DTC P0736

Incorrect Reverse Ratio

DTC P0741

Torque Converter Clutch (TCC) System-Stuck Off

DTC P0742

Torque Converter Clutch (TCC) System-Stuck On

DTC P0762

4-5 Shift Solenoid Valve Performance-No Fifth Gear

DTC P0841

Transmission Fluid Pressure (TFP) Sensor Performance

DTC P0842

Transmission Fluid Pressure (TFP) Sensor Circuit Low Voltage

DTC P0843

Transmission Fluid Pressure (TFP) Sensor Circuit High Voltage

DTC P0960

Line Pressure Control (PC) Solenoid Control Circuit Open

DTC P0961

Line Pressure Control (PC) Solenoid System Performance

DTC P0962

Line Pressure Control (PC) Solenoid Control Circuit Low Voltage

DTC P0963

Line Pressure Control (PC) Solenoid Control Circuit High Voltage

DTC P0964

Torque Converter Clutch (TCC) Pressure Control (PC) Solenoid Control Circuit Open

DTC P0965

Torque Converter Clutch (TCC) Pressure Control (PC) Solenoid System Performance

DTC P0966

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

DTC P0967

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

DTC P0970

Shift Pressure Control (PC) Solenoid Control Circuit Low Voltage

DTC P0971

Shift Pressure Control (PC) Solenoid Control Circuit High Voltage

DTC P0973

Shift Solenoid 1 Control Circuit Low Voltage

DTC P0974

Shift Solenoid 1 Control Circuit High Voltage

DTC P0976

Shift Solenoid 2 Control Circuit Low Voltage

DTC P0977

Shift Solenoid 2 Control Circuit High Voltage

DTC P0979

Shift Solenoid 3 Control Circuit Low Voltage

DTC P0980

Shift Solenoid 3 Control Circuit High Voltage

DTC P0982

Shift Solenoid 4 Control Circuit Low Voltage

DTC P0983

Shift Solenoid 4 Control Circuit High Voltage

DTC P0985

Shift Solenoid 5 Control Circuit Low Voltage

DTC P0986

Shift Solenoid 5 Control Circuit High Voltage

DTC P1133

HO2S Insufficient Switching Sensor 1

DTC P1134

HO2S Transition Time Ratio Sensor 1

DTC P1540

Air Conditioning (A/C) Refrigerant Overpressure - Air Conditioning (A/C) Disabled

DTC P1574

Stop Lamp Switch Circuit

DTC P1580

Cruise Control Move Circuit Low Voltage

DTC P1581

Cruise Control Move Circuit High Voltage

DTC P1582

Cruise Control Direction Output Circuit Low Voltage

DTC P1583

Cruise Control Direction Output Circuit High Voltage

DTC P1584

Cruise Control Disabled

DTC P1587

Cruise Control Clutch Output Circuit Low Voltage

DTC P1588

Cruise Control Clutch Output Circuit High Voltage

DTC P1599

Engine Stall Detected

DTC P1624

Customer Snapshot Requested - Data Available

DTC P1626

Theft Deterrent Start Enable Signal Lost

DTC P1630

Theft Deterrent Learn Mode Active

DTC P1631

Theft Deterrent Start Enable Signal Not Correct

DTC P1719

Incorrect Shifting

DTC P1756

Transmission Range (TR) Switch Indicates Park/Neutral (P/N) With Drive Ratio

DTC P1758

Transmission Range (TR) Switch Indicates Drive Without Drive Ratio

DTC P1779

Torque Delivered Signal

DTC P1780

Torque Reduction Signal

DTC P1781

Engine Torque Signal

DTC P1791

Throttle/Pedal Position Signal

DTC P1792

Engine Coolant Signal

DTC P1868

Transmission Fluid Life

DTC P1882

Ratio Control Performance

DTC P1883

Ratio Control Motor Coil A1 Control Circuit

DTC P1884

Ratio Control Motor Coil A2 Control Circuit

DTC P1885

Ratio Control Motor Coil B1 Control Circuit

DTC P1886

Ratio Control Motor Coil B2 Control Circuit

DTC P1888

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

DTC P1889

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

DTC P2301

Ignition Coil 1 and 4 Control Circuit High Voltage

DTC P2304

Ignition Coil 2 and 3 Control Circuit High Voltage

DTC P2533

Ignition 1 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 U1500

Communication State of Health

DTC U2100

CAN Bus Error With Engine Control System

DTC U2103 or U2104

Controller Area Network (CAN) Bus Error

DTC U2105-U2177

Loss of XXX Communications