GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

DTC B0005

In Park Switch Circuit

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

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

DTC B0130

Air Flow Position Feedback Circuit

DTC B0160, B0161, B0165, or B0166

Air Temperature Sensor Circuit

DTC B0185 or B0186

Solar Load Sensor Circuit

DTC B0285

Electric Rear Defrost Circuit Low

DTC B0286

Electric Rear Defrost Circuit High

DTC B0413

Temperature Control Feedback Circuit

DTC B0827

Traction Control System Off Indicator Circuit Low

DTC B0828

Traction Control System Off Indicator Circuit High

DTC B0936

Coolant Level Sensor Circuit

DTC B1000

ECU Malfunction

DTC B1001

Option Configuration Error

DTC B1327

Device Power 1 Circuit Low

DTC B1328

Device Power 1 Circuit High

DTC B1372

Device Ignition 1 (ON/START) 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 B2575

Headlamp Control Circuit Malfunction

DTC B2577

Headlamp Control Circuit Low

DTC B2578

HeadLamp Control Circuit High

DTC B2585

Parklamp Control Circuit Malfunction

DTC B2587

Park Lamp Control Circuit Low

DTC B2588

Park Lamp 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 B2647

Ambient Light Sensor Circuit Low

DTC B2662

Park Lamp Switch Circuit Malfunction

DTC B2707

Gearshift Unlock Circuit Low

DTC B2708

Gearshift Unlock 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

Left Front/Driver Door Only Unlock Circuit

DTC B3132 or B3133

All Door Unlock Circuit

DTC B3137 or B3138

All Door Lock Circuit

DTC B3267

Trunk Release Output Circuit Low

DTC B3268

Trunk Release Output Circuit High

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 C0035-C0051

Wheel Speed Sensor Circuit

DTC C0060-C0095

EBCM Malfunction

DTC C0110

Pump Motor Malfunction

DTC C0121

Valve Relay Circuit Malfunction

DTC C0141-C0156

EBCM Malfunction

DTC C0161

ABS/TCS Brake Switch Circuit Malfunction

DTC C0236

TCS RPM Signal Circuit Malfunction

DTC C0241

PCM Indicated Requested Torque Malfunction

DTC C0244

PWM Delivered Torque Malfunction

DTC C0245

Wheel Speed Sensor Frequency Error

DTC C0267

Low Brake Fluid Indicated

DTC C0550

ECU Malfunction

DTC C0896

Device Voltage Range Performance

DTC P0030 or P0050

HO2S Heater Control Circuit

DTC P0031 or P0051

HO2S Heater Control Circuit Low Voltage

DTC P0032 or P0052

HO2S Heater Control Circuit High Voltage

DTC P0036 or P0056

HO2S Heater Control Circuit

DTC P0037 or P0057

HO2S Heater Control Circuit Low Voltage

DTC P0038 or P0058

HO2S Heater Control Circuit High Voltage

DTC P0101

Mass Air Flow (MAF) Sensor Performance

DTC P0102

Mass Air Flow (MAF) Sensor Circuit Low Voltage

DTC P0103

Mass Air Flow (MAF) Sensor 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 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 1 Performance

DTC P0122

Throttle Position (TP) Sensor 1 Circuit Low Voltage (L81)

DTC P0123

Throttle Position (TP) Sensor 1 Circuit High Voltage (L81)

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(L61)

DTC P0130 or P0150

HO2S Circuit (L81)

DTC P0131

HO2S Circuit Low Voltage Bank 1 Sensor 1 (L61)

DTC P0131 or P0151

HO2S Circuit Low Voltage (L81)

DTC P0132

HO2S Circuit High Voltage Bank 1 Sensor 1 (L61)

DTC P0132 or P0152

HO2S Circuit High Voltage (L81)

DTC P0133

HO2S Slow Response Sensor 1 (L61)

DTC P0133 or P0153

HO2S Slow Response (L81)

DTC P0134

HO2S Circuit Insufficient Activity Bank 1 Sensor 1 (L61)

DTC P0134 or P0154

HO2S Circuit Insufficient Activity (L81)

DTC P0135 or P0141

HO2S Heater Performance (L61)

DTC P0135 or P0155

HO2S Heater Performance (L81)

DTC P0136

HO2S Circuit Bank 1 Sensor 2 (L61)

DTC P0136 or P0156

HO2S Circuit (L81)

DTC P0137

HO2S Circuit Low Voltage Sensor 2 (L61)

DTC P0137 or P0157

HO2S Circuit Low Voltage (L81)

DTC P0138

HO2S Circuit High Voltage Bank 1 Sensor 2 (L61)

DTC P0138 or P0158

HO2S Circuit High Voltage (L81)

DTC P0139 or P0159

HO2S Slow Response (L81)

DTC P0140

HO2S Circuit Insufficient Activity Bank 1 Sensor 2 (L61)

DTC P0140 or P0160

HO2S Circuit Insufficient Activity (L81)

DTC P0141 or P0161

HO2S Heater Performance (L81)

DTC P0171

Fuel Trim System Lean Bank 1 (L61)

DTC P0171 or P0174

Fuel Trim System Lean(L81)

DTC P0172

Fuel Trim System Rich Bank 1 (L61)

DTC P0172 or P0175

Fuel Trim System Rich (L81)

DTC P0201-P0204

Injector Control Circuit (L61)

DTC P0201-P0206

Injector Control Circuit (L81)

DTC P0218

Transmission Fluid Overtemperature

DTC P0221

Throttle Position (TP) Sensor 2 Performance

DTC P0222

Throttle Position (TP) Sensor 2 Circuit Low Voltage

DTC P0223

Throttle Position (TP) Sensor 2 Circuit High Voltage

DTC P0261, P0264, P0267, P0270, P0273, or P0276

Injector Control Circuit Low Voltage

DTC P0262, P0265, P0268, P0271, P0274, or P0277

Injector Control Circuit High Voltage

DTC P0300

Engine Misfire Detected

DTC P0301-P0304

Engine Misfire Detected (L61)

DTC P0301-P0306

Engine Misfire Detected (L81)

DTC P0313

Misfire Detected With Low Fuel Level

DTC P0315

Crankshaft Position System Variation Not Learned (CASE)

DTC P0324

Knock Sensor (KS) Module Performance

DTC P0326

Knock Sensor (KS) Performance (L61)

DTC P0327

Knock Sensor (KS) Circuit Low Voltage Bank 1 (L61)

DTC P0327 or P0332

Knock Sensor (KS) Circuit Low Voltage (L81)

DTC P0328 or P0333

Knock Sensor (KS) Circuit High Voltage (L81)

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 P0342

Camshaft Position (CMP) Sensor Circuit Low Voltage

DTC P0343

Camshaft Position (CMP) Sensor Circuit High Voltage

DTC P0420

Catalyst System Low Efficiency

DTC P0421 or P0431

Warm-Up Catalyst 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 P0451

Fuel Tank Pressure (FTP) 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 P0458

Evaporative Emission (EVAP) Purge Solenoid Control Circuit Low Voltage

DTC P0459

Evaporative Emission (EVAP) Purge Solenoid Control 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 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 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 P0530, P0532, or P0533

Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit

DTC P0560

System Voltage

DTC P0562

System Voltage Low

DTC P0563

System Voltage High

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 Internal Performance

DTC P0602

Control Module Not Programmed

DTC P0603

Control Module Long Term Memory Reset

DTC P0604

Transmission Control Module (TCM) Random Access Memory (RAM)

DTC P0621

Generator L-Terminal Circuit

DTC P0627

Fuel Pump Relay Control Circuit

DTC P0628

Fuel Pump Relay Control Circuit Low Voltage

DTC P0629

Fuel Pump Relay Control Circuit High Voltage

DTC P0638

Throttle Actuator Control (TAC) Command Performance

DTC P0645, P0646, or P0647

Air Conditioning (A/C) Clutch Relay Control Circuit

DTC P0700

Transmission Control Module (TCM) Requested MIL Illumination

DTC P0705

Transmission Range (TR) 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 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 P0741

Torque Converter Clutch (TCC) System-Stuck Off

DTC P0742

Torque Converter Clutch (TCC) System-Stuck On

DTC P0748

Pressure Control (PC) Solenoid Control Circuit

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 Control Circuit

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 Control Circuit

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 P1245

Intake Plenum Switchover Solenoid Control Circuit

DTC P1551

Throttle Valve Rest Position Not Reached During Learn

DTC P1599

Engine Stall Detected

DTC P1621

Transmission Control Module (TCM) Long Term Memory Performance

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 P1779

Torque Delivered Signal

DTC P1780

Transmission Control Module (TCM) Requested MIL Illumination

DTC P1791

Throttle/Pedal Position Signal

DTC P1792

Engine Coolant Signal

DTC P1795

Throttle Actuator Control (TAC) System Signal

DTC P1810

Transmission Fluid Pressure (TFP) Position Switch-Invalid Range

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 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-Drive Without Drive Ratio

DTC P1831

Pressure Control (PC) Solenoid/Shift Lock Solenoid Control Circuit Low Voltage

DTC P1833

Torque Converter Clutch (TCC)/Shift Solenoid Control Circuit Low Voltage

DTC P1842

1-2 Shift Solenoid Control Circuit Low Voltage

DTC P1843

1-2 Shift Solenoid Control Circuit High Voltage

DTC P1845

2-3 Shift Solenoid Control Circuit Low Voltage

DTC P1847

2-3 Shift Solenoid Control Circuit High Voltage

DTC P1860

Torque Converter Clutch (TCC) Pulse Width Modulated (PWM) Solenoid Control Circuit

DTC P1868

Transmission Fluid Life

DTC P1887

Torque Converter Clutch (TCC) Release Switch Circuit

DTC P2008

Intake Manifold Runner Control (IMRC) Solenoid Control Circuit

DTC P2009

Intake Manifold Runner Control (IMRC) Solenoid Control Circuit Low Voltage

DTC P2010

Intake Manifold Runner Control (IMRC) Solenoid Control Circuit High Voltage

DTC P2100

Throttle Actuator Control (TAC) Motor Control Circuit

DTC P2101

Control Module Throttle Actuator Position Performance

DTC P2107

Throttle Actuator Control (TAC) Module Internal Circuit

DTC P2110

Throttle Actuator Control (TAC) System - Forced Limited Engine Speed

DTC P2119

Throttle Closed Position Performance

DTC P2122

Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

DTC P2123

Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

DTC P2127

Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

DTC P2128

Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

DTC P2138

Accelerator Pedal Position (APP) Sensor 1-2 Correlation

DTC P2176

Minimum Throttle Position Not Learned

DTC P2500

Generator L-Terminal Circuit Low Voltage

DTC P2501

Generator L-Terminal Circuit High Voltage

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

Incorrect Number of Controllers On Bus Than Programmed

DTC U2104

Controller Area Network (CAN) Bus Reset Counter Overrun

DTC U2105-U2177

Loss of XXX Communications