GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

DTC B0005

In Park Switch Circuit

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 Malfunction Present

DTC B0057, B0058, or B0059

Left Front/Driver Frontal Deployment Loop Open

DTC B0064, B0065, or B0066

Left Front/Driver Frontal Deployment Loop Open

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

Left Front/Driver Frontal Deployment Loop Open

DTC B0285

Electric Rear Defrost Circuit Low

DTC B0286

Electric Rear Defrost Circuit High

DTC B0936

Coolant Level Sensor Circuit

DTC B1000

ECU Malfunction

DTC B1001

Option Configuration Error

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

Device Ignition 1 Circuit Low

DTC B1382

Device Ignition ACC Circuit Low

DTC B1482

Battery Rundown Protection Circuit Low

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 B2532

Front Foglamps Control Circuit Low

DTC B2533

Front Foglamps Control Circuit High

DTC B2600

Daytime Running Lamp Control 1 Circuit Malfunction

DTC B2602

Daytime Running Lamp Control 1 Circuit Low

DTC B2603

Daytime Running Lamp Control 1 Circuit High

DTC B2622

Display Dimming PWM Input Circuit Low

DTC B2623

Display Dimming PWM Input Circuit High

DTC B2627

Display Dimming Pulse Width Modulation (PWM) Output Circuit Low

DTC B2628

Display Dimming PWM Output Circuit High

DTC B2662

Park Lamp Switch Circuit Malfunction

DTC B2707

Gearshift Unlock Circuit Low

DTC B2708

Gearshift Unlock Circuit High

DTC B2743

Front Foglamp Switch Circuit High

DTC B2752

Horn Relay Coil Circuit Low

DTC B2753

Horn Relay Coil Circuit High

DTC B2947

Security System Sensor Power Circuit Low

DTC B2948

Security System Sensor Power Circuit High

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 B2965

Key in Ignition Circuit Malfunction

DTC B3031

Security System Controller in Learn Mode

DTC B3033

Security System Indicates Tamper

DTC B3109

Keyless Entry Transmitter Low Battery

DTC B3127 or B3128

Driver Door Only Unlock Circuit

DTC B3132 or B3133

All Door Unlock Circuit

DTC B3137 or B3138

All Door Lock Circuit

DTC B3702

Intermittent Wiper Delay Input Circuit Low

DTC B3703

Intermittent Wiper Delay Input Circuit High

DTC B3708

Front Washer Motor Input Circuit High

DTC B3713

Rear Washer Motor Input Circuit High

DTC B3715, B3716, B3717, B3718, or B3719

Front Wiper Relay Drive Circuit

DTC B3722

Rear Wiper Relay Drive Circuit Low

DTC B3723

Rear Wiper Relay Drive Circuit High

DTC B3787 or B3788

Blower Motor Relay Control Circuit Low

DTC C0000

Vehicle Speed Information Circuit Malfunction

DTC C0035-C0051

Wheel Speed Sensor Circuit

DTC C0060-C0095

EBCM Malfunction

DTC C0110

Pump Motor Malfunction

DTC C0121

Valve Relay Circuit Malfunction

DTC C0161

ABS/TCS Brake Switch Circuit Malfunction

DTC C0236

TCS RPM Signal Circuit Malfunction

DTC C0241

PCM Indicated Requested Torque 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 C0551

Option Configuration Error

DTC C0847

Device Ignition 1 Circuit Low

DTC C0848

Device Ignition 1 Circuit High

DTC C0896

Device Voltage Range Performance

DTC C0899

Device 1 Voltage Low

DTC C0900

Device 1 Voltage High

DTC P0030, P0036, P0050, or P0056

HO2S Heater Control Circuit

DTC P0068

MAP/MAF - Throttle Position Correlation

DTC P0097

Intake Air Temperature Sensor 2 Circuit Low

DTC P0098

Intake Air Temperature Sensor 2 Circuit High

DTC P0105

Manifold Absolute Pressure (MAP) Sensor Performance

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 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 Sensor "A" Circuit

DTC P0122

Throttle Position (TP) Sensor 1 Circuit Low Voltage

DTC P0123

Throttle Position (TP) Sensor 1 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 Bank 1 Sensor 1

DTC P0131

HO2S Circuit Low Voltage Bank 1 Sensor 1

DTC P0132

HO2S Circuit High Voltage Bank 1 Sensor 1

DTC P0133

HO2S Slow Response Sensor 1 (L61)

DTC P0133 or P0153

HO2S Slow Response

DTC P0134

HO2S Circuit Insufficient Activity Bank 1 Sensor 1

DTC P0135 or P0141

HO2S Heater Performance (L61)

DTC P0135 or P0155

HO2S Heater Performance (L66)

DTC P0136

HO2S Circuit Bank 1 Sensor 2

DTC P0137

HO2S Circuit Low Voltage Sensor 2 (L61)

DTC P0137 or P0157

HO2S Circuit Low Voltage (L66)

DTC P0138

HO2S Circuit High Voltage Bank 1 Sensor 2 (L61)

DTC P0138 or P0158

HO2S Circuit High Voltage (L66)

DTC P0139 or P0159

HO2S Slow Response

DTC P0140

HO2S Circuit Insufficient Activity Bank 1 Sensor 2

DTC P0141 or P0161

HO2S Heater Performance

DTC P0171

Fuel Trim System Lean Bank 1 (L61)

DTC P0171 or P0174

Fuel Trim System Lean (L66)

DTC P0172

Fuel Trim System Rich Bank 1 (L61)

DTC P0172 or P0175

Fuel Trim System Rich (L66)

DTC P0201-P0204

Injector Control Circuit (L61)

DTC P0201-P0206

Injector Control Circuit (L66)

DTC P0217

Engine Coolant Overtemperature

DTC P0218

Transmission Fluid Overtemperature

DTC P0220

Throttle Position Sensor "B" Circuit

DTC P0222

Throttle Position (TP) Sensor 2 Circuit Low Voltage

DTC P0223

Throttle Position (TP) Sensor 2 Circuit High Voltage

DTC P0300

Engine Misfire Detected

DTC P0301-P0304

Engine Misfire Detected (L61)

DTC P0301-P0306

Engine Misfire Detected (L66)

DTC P0315

Crankshaft Position System Variation Not Learned (CASE)

DTC P0325

Knock Sensor (KS) Circuit

DTC P0326

Knock Sensor (KS) Performance

DTC P0327

Knock Sensor (KS) Circuit Low Voltage Bank 1

DTC P0335

Crankshaft Position (CKP) Sensor Circuit

DTC P0336

Crankshaft Position (CKP) Sensor Performance

DTC P0340

Camshaft Position (CMP) Sensor Circuit

DTC P0341

Camshaft Position (CMP) Sensor Performance

DTC P0385

Crankshaft Position Sensor "B" Circuit

DTC P0386

Crankshaft Position Sensor "B" Circuit Range/Performance

DTC P0401

Exhaust Gas Recirculation (EGR) Flow Insufficient

DTC P0403

Exhaust Gas Recirculation (EGR) Solenoid Control Circuit

DTC P0404

Exhaust Gas Recirculation Control Circuit Range/Performance

DTC P0406

Exhaust Gas Recirculation (EGR) Position Sensor Circuit High Voltage

DTC P0420

Catalyst System Low Efficiency

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 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 P0461

Fuel Level Sensor Performance

DTC P0462

Fuel Level Sensor Circuit Low Voltage

DTC P0463

Fuel Level Sensor Circuit High Voltage

DTC P0480, P0481, P0691, P0692, P0693, P0694, or P1650

Cooling Fan Relay Control 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 P0501

Vehicle Speed Sensor "A" Range/Performance

DTC P0502

Vehicle Speed Sensor (VSS) Circuit Low Voltage

DTC P0503

Vehicle Speed Sensor (VSS) Circuit Intermittent

DTC P0506

Idle Speed Low

DTC P0507

Idle Speed High

DTC P0520

Engine Oil Pressure (EOP) Switch Circuit

DTC P0530, P0532, or P0533

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 P0571

Cruise Control Brake Switch Circuit

DTC P0601

Control Module Read Only Memory (ROM)

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

ECU Malfunction

DTC P0602

Control Module Not Programmed

DTC P0603

Control Module Long Term Memory Reset

DTC P0604

Control Module Random Access Memory (RAM)

DTC P0606

Control Module Internal Performance

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 P0641

5-Volt Reference Circuit

DTC P0645, P0646, or P0647

Air Conditioning (A/C) Clutch Relay Control Circuit

DTC P0651

Sensor Reference Voltage "B" Circuit/Open

DTC P0685

ECM/PCM Power Relay Control Circuit /Open

DTC P0688

ECM/PCM Power Relay Sense Circuit /Open

DTC P0700

Transmission Control Module (TCM) Requested MIL Illumination

DTC P0705

Transmission Range (TR) Switch Circuit

DTC P0706

Transmission Range Sensor "A" Circuit Range/Performance

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 P0718

Input/Turbine Speed Sensor "A" Circuit Intermittent

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 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 P0741

Torque Converter Clutch (TCC) System-Stuck Off

DTC P0742

Torque Converter Clutch (TCC) System-Stuck On

DTC P0746

Pressure Control Solenoid "A" Performance or Stuck Off

DTC P0747

Pressure Control Solenoid "A" Stuck On

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 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 P0761

Shift Solenoid "C" Performance or Stuck Off

DTC P0762

4-5 Shift Solenoid Valve Performance - No Fifth Gear

DTC P0776

Pressure Control Solenoid "B" Performance or Stuck Off

DTC P0777

Pressure Control Solenoid "B" Stuck On

DTC P0780

Shift Error

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 P0847

Transmission Fluid Pressure Sensor "B" Circuit Low

DTC P0848

Transmission Fluid Pressure Sensor "B" Circuit High

DTC P0872

Transmission Fluid Pressure Sensor "C" Circuit Low

DTC P0873

Transmission Fluid Pressure Sensor "C" Circuit High

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 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 P1128

Manifold Absolute Pressure (MAP) Sensor Low Pressure

DTC P1129

Manifold Absolute Pressure (MAP) Sensor High Pressure

DTC P1133

HO2S Insufficient Switching Sensor 1

DTC P1134

HO2S Transition Time Ratio Bank1 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 P1516

Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

DTC P1574

Stop Lamp Switch Circuit

DTC P1599

Engine Stall Detected

DTC P1626

Theft Deterrent Fuel Enable Signal Not Received

DTC P1630

Theft Deterrent Learn Mode Active

DTC P1631

Theft Deterrent Fuel Enable Signal Not Correct

DTC P1632

Theft Deterrent Fuel Disable Signal Received

DTC P1640

Control Module Output A Circuit

DTC P1650

Control Module Output B Circuit

DTC P1670

Control Module Output D Circuit

DTC P1680

Control Module Accelerator Pedal Position (APP) System Performance

DTC P1681

Control Module Throttle Position (TP) System Performance

DTC P1682

Ignition 1 Switch Circuit 2

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 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 P2100

Throttle Actuator Control (TAC) Motor Control Circuit

DTC P2101

Control Module Throttle Actuator Position Performance

DTC P2108

Throttle Actuator Control Module Performance

DTC P2111

Throttle Actuator Control System - Stuck Open

DTC P2112

Throttle Actuator Control System - Stuck Closed

DTC P2119

Throttle Closed Position Performance

DTC P2120

Throttle/Pedal Position Sensor/Switch "D" Circuit

DTC P2122

Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

DTC P2123

Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

DTC P2125

Throttle Position Sensor "E" Circuit

DTC P2127

Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

DTC P2128

Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

DTC P2135

Throttle Position Sensor "A" / "B" Voltage Correlation

DTC P2138

Accelerator Pedal Position (APP) Sensor 1-2 Correlation

DTC P2176

Minimum Throttle Position Not Learned

DTC P2199

Intake Air Temperature Sensor 1 / 2 Correlation

DTC P2227

Barometric Pressure Circuit Range/Performance

DTC P2228

Barometric Pressure Circuit Low

DTC P2229

Barometric Pressure Circuit High

DTC P2238 or P2241

HO2S Pumping Current Control Circuit Low Voltage

DTC P2239 or P2242

HO2S Pumping Current Control Circuit High Voltage

DTC P2243 or P2247

HO2S Reference Voltage Circuit

DTC P2245 or P2249

HO2S Reference Voltage Circuit Low Voltage

DTC P2252 or P2255

HO2S Reference Ground Circuit Low Voltage

DTC P2253 or P2256

HO2S Reference Ground Circuit High Voltage

DTC P2282

Air Leak Between Throttle Body and Intake Valves

DTC P2297 or P2298

HO2S Performance During Decel Fuel Cut-Off (DFCO)

DTC P2413

Exhaust Gas Recirculation System Performance

DTC P2414

O2 Sensor Exhaust Sample Error Bank 1 Sensor 1

DTC P2415

O2 Sensor Exhaust Sample Error Bank 2 Sensor 1

DTC P2553

Throttle Inhibit Circuit Range/Performance

DTC P2554

Throttle Inhibit Circuit Low

DTC P2555

Throttle Inhibit Circuit High

DTC P2627 or P2630

HO2S Pumping Current Trim Circuit Low Voltage

DTC P2628 or P2631

HO2S Pumping Current Trim Circuit High Voltage

DTC P2646

"A" Rocker Arm Actuator System Performance or Stuck Off Bank 1

DTC P2647

"A" Rocker Arm Actuator System Stuck On Bank 1

DTC P2648

"A" Rocker Arm Actuator Control Circuit Low Bank 1

DTC P2649

"A" Rocker Arm Actuator Control Circuit High Bank 1

DTC P2763

Torque Converter Clutch Pressure Control Solenoid Control Circuit High

DTC P2764

Torque Converter Clutch Pressure Control Solenoid Control Circuit Low

DTC P2769

Torque Converter Clutch Circuit Low

DTC P2770

Torque Converter Clutch Circuit High

DTC U0107

Lost Communications With Throttle Actuator Control (TAC) Module

DTC U1000

Class 2 Data Link 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 Communication

DTC U2102 or U2103

Fewer Controllers On Bus Than Programmed

DTC U2105-U2177

Loss of XXX Communications