GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

DTC B0016

RF/Passenger Frontal Deployment Loop (Single Stage or Stage 1) Resistance Low

DTC B0017

RF/Passenger Frontal Deployment Loop (Single Stage or Stage 1) Open

DTC B0018

RF/Passenger Frontal Deployment Loop (Single Stage or Stage 1) Short to Ground/Voltage Out of Range

DTC B0022

LF/Driver Frontal Deployment Loop (Single Stage or Stage 1) Resistance Low

DTC B0024

LF/Driver Frontal Deployment Loop (Single Stage or Stage 1) Short to Ground/Voltage Out of Range

DTC B0026

LF/Driver Frontal Deployment Loop (Single Stage or Stage 1) Open

DTC B0028

RF/Passenger Side Deployment Loop Resistance Low

DTC B0029

RF/Passenger Side Deployment Loop Open

DTC B0030

RF/Passenger Side Deployment Loop Short to Ground/Voltage Out of Range

DTC B0035

ADS Closed/Shorted to Ground

DTC B0036

ADS Open/Missing/Shorted to Battery

DTC B0040

LF/Driver Side Deployment Loop Resistance Low

DTC B0041

LF/Driver Side Deployment Loop Open

DTC B0045

LF Side Deploy Loop Short to Ground/Voltage Out of Range

DTC B0051

Deployment Commanded

DTC B0053

Deployment Commanded with Loop Malfunctions Present

DTC B0077

LF/Driver SIS Malfunction

DTC B0078

RF/Passenger SIS Malfunction

DTC B0079

Incorrect LF/Driver SIS Installed

DTC B0080

Discard LF/Driver SIS

DTC B0081

Incorrect RF/Passenger SIS Installed

DTC B0082

Discard RF/Passenger SIS

DTC B0090

Active Switch Voltage Out of Range

DTC B0091

Active Switch: Wrong State

DTC B0159

Outside Air Temperature Sensor Circuit Range/Performance

DTC B0164

Passenger Compartment Temperature Sensor #1 Circuit Range/Performance

DTC B0174

Output Air Temperature Sensor #1 Circuit Range/Performance

DTC B0179

Output Air Temperature Sensor #2 Circuit Range/Performance

DTC B0184

Solar Load Sensor #1 CKT Range

DTC B0229

Air Flow Control #7 (Recirc) Feedback Circuit Range/Performance

DTC B0248

Mode Door Inoperative Error

DTC B0268

Air Flow Control #7 (Recirc) Circuit Malfunction

DTC B0408

Temperature Control #1 Circuit Malfunction

DTC B0414

Temperature Control #1 Feedback Circuit Range/Performance

DTC B0429

Air Mix Door #3 Range Error

DTC B0434

Temperature Control #3 Rear Feedback Circuit Range

DTC B0540

Speedometer Circuit

DTC B1000

ECU Malfunction

DTC B1001

Option Configuration Error

DTC B1020

Auxiliary ECU Malfunction

DTC B1023

Integral Switch Performance

DTC B1367

IPC Ignition 0 Circuit Low

DTC B1397

Device Voltage Reference Out #1 CKT Low

DTC B1398

Device Voltage Reference Out #1 CKT High

DTC B1477

Retained Accessory Power Circuit Low

DTC B1478

Retained Accessory Power Circuit High

DTC B1480

Battery Rundown Protection Circuit Malf

DTC B2462

GPS Signal Error

DTC B2476

Cellular Phone Select Service Switch Malfunction

DTC B2527

Front Fog Lamp Circuit Low

DTC B2577

Headlamp Control Circuit Low

DTC B2585

Parklamp Control Circuit Malfunction

DTC B2613

Pass Compartment Dimming #1 Circuit High

DTC B2617

Pass Compartment Dimming #2 Circuit Low

DTC B2618

Pass Compartment Dimming #2 Circuit High

DTC B2642

Delayed Exterior Lighting Ctrl CKT Low

DTC B2643

Delayed Exterior Lighting Ctrl CKT High

DTC B2647

Ambient Light Sensor Circuit Low

DTC B2648

Ambient Light Sensor Circuit High

DTC B2722

Trans Preference Switch Circuit Low

DTC B2725

ATC Mode Switch Circuit Malfunction

DTC B2752

Horn Relay Coil Circuit Low

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

Security System Controller in Learn Mode

DTC B3033

Security System Indicates Tamper

DTC B3102

Keyless Entry Data Link Circuit Low

DTC B3137 or B3138

All Door Lock Circuit

DTC B3147 or B3148

RF Unlock Switch Circuit

DTC B3531

Air Flow Control #10 Rear Circuit Malfunction

DTC B3579

Output Air Temperature Sensor #6 Circuit Range/Performance

DTC B3584

Output Air Temperature Sensor #7 Circuit Range/Performance

DTC B3761

Air Flow Control #3 (Blend Defog/Floor) Feedback Circuit Range/Performance

DTC B3764

Airflow Control #4 Mode Feedback Circuit Malfunction

DTC C0000

Vehicle Speed Information Circuit Malfunction

DTC C0221-C0227

Front Wheel Speed Sensor Circuit

DTC C0229

Drop Out of Front Wheel Speed Signals

DTC C0235-C0237 or P1504

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 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 C0308

Motor A/B Circuit Low

DTC C0309

Motor A/B Circuit High

DTC C0310

Motor A/B Circuit Open

DTC C0315

Motor Ground Circuit Open

DTC C0323

T-Case Lock Circuit Low

DTC C0324

T-Case Lock Circuit High

DTC C0327

Encoder Circuit Malfunction

DTC C0362

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

DTC C0367

Front Axle Control Circuit High

DTC C0374

General System Malfunction

DTC C0376

Front/Rear Shaft Speed Mismatch

DTC C0387

Unable to Perform Shift

DTC C0470

Steering Position and Rate of Change Sensor Circuit No. 1 Malfunction

DTC C0472

Steering Handwheel Speed Sensor Signal V Low

DTC C0473

Steering Handwheel Speed Sensor Signal V High

DTC C0495

EVO Tracking Error

DTC C0496

Steering Assist Control Actuator Feed Circuit Malfunction

DTC C0498

Steering Assist Control Actuator Feed Circuit Low

DTC C0499

Steering Assist Control Solenoid Feed Circuit High

DTC C0501

Steering Assist Control Actuator Return Circuit Malfunction

DTC C0503

Steering Assist Control Solenoid Return Circuit Low

DTC C0504

Steering Assist Control Solenoid Return Circuit High

DTC C0506

Steering Position and Rate of Change Sensor Circuit No. 2 Malfunction

DTC C0550

ECU Malfunction

DTC C0551

Option Configuration Error

DTC C0575, C0580, C0585, or C0590

Suspension Damper Solenoid Circuit

DTC C0611

VIN Information Error

DTC C0615, C0620, C0625 or C0630

Suspension Position Sensor Circuit

DTC C0655

Level Control Compressor Circuit Malfunction

DTC C0660

Level Control Exhaust Valve Circuit Malfunction

DTC C0690

Damper Control Relay Circuit Malfunction

DTC C0711

Level Control Air Pressure Sensor Circuit Malfunction

DTC C0870

Device Voltage Reference Output # 1 Circuit Malfunction

DTC P0087

Fuel Rail Pressure (FRP) Too Low

DTC P0088

Fuel Rail Pressure (FRP) Too High

DTC P0089

Fuel Pressure Regulator Performance

DTC P0090

Fuel Pressure Regulator Control Circuit

DTC P0093

Fuel System Large Leak Detected

DTC P0094

Fuel System Small Leak Detected

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) System 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 P0117

Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

DTC P0118

Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

DTC P0121

TP Sensor Circuit Insufficient Activity

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 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 or P0155

HO2S Heater Performance

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 P0141

HO2S Heater Performance Bank 1 Sensor 2

DTC P0141 or P0161

HO2S Heater Performance

DTC P0161

HO2S Heater Performance Bank 2 Sensor 2

DTC P0168

Engine Fuel Overtemperature

DTC P0171 or P0174

Fuel Trim System Lean

DTC P0172 or P0175

Fuel Trim System Rich

DTC P0181

Fuel Temperature Sensor Performance

DTC P0182

Fuel Temperature Sensor Circuit Low Voltage

DTC P0183

Fuel Temperature Sensor Circuit High Voltage

DTC P0192

Fuel Rail Pressure (FRP) Sensor Circuit Low Voltage

DTC P0193

Fuel Rail Pressure (FRP) Sensor Circuit High Voltage

DTC P0200

Injector Control Circuit

DTC P0201-P0208

Injector Control Circuit

DTC P0218

Transmission Fluid Overtemperature

DTC P0230

Fuel Pump Relay Control Circuit

DTC P0234

Engine Overboost

DTC P0236

Turbocharger Boost System Performance

DTC P0237

Turbocharger Boost Sensor Circuit Low Voltage

DTC P0238

Turbocharger Boost Sensor Circuit High Voltage

DTC P0300

Engine Misfire Detected

DTC P0301-P0308

Engine Misfire Detected

DTC P0325

Knock Sensor Module Performance

DTC P0327

Knock Sensor (KS) 1 Circuit

DTC P0327 or P0332

Knock Sensor Circuit

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 P0351

Ignition Coil 1 Control Circuit

DTC P0351-P0358

Ignition Coil Control Circuit

DTC P0370 or P0374

High Resolution Circuit

DTC P0380

Glow Plug Feedback Circuit

DTC P0401

Exhaust Gas Recirculation (EGR) Flow Insufficient

DTC P0404

Exhaust Gas Recirculation (EGR) Open Position Performance

DTC P0405

Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Voltage

DTC P0410

Secondary Air Injection (AIR) System

DTC P0418

Secondary Air Injection (AIR) Pump Relay Control Circuit

DTC P0420 or P0430

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 P0461

Fuel Level Sensor Performance

DTC P0462

Fuel Level Sensor Circuit Low Voltage

DTC P0463

Fuel Level Sensor Circuit High Voltage

DTC P0500

Vehicle Speed Sensor (VSS) 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 P0540

Intake Air (IA) Heater Feedback Circuit

DTC P0543

Intake Air (IA) Heater Element Open

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-P0607, P1600, P1621, P1627, P1680, P1681, or P1683

ECU Malfunction

DTC P0606

Control Module Internal Performance

DTC P0608

Vehicle Speed Output Circuit

DTC P0611

Fuel Injector Control Module Performance

DTC P0612

Fuel Injector Control Module Relay Control Circuit

DTC P0621

Generator L-Terminal Circuit

DTC P0622

Generator F-Terminal Circuit

DTC P0650

Malfunction Indicator Lamp (MIL) Control Circuit

DTC P0654

Engine Speed Output Circuit

DTC P0700

Transmission Control Module (TCM) Requested MIL Illumination

DTC P0701

Transmission Control System Performance

DTC P0703

Brake Switch Circuit

DTC P0704

Clutch Switch Circuit

DTC P0706

Trans Range Switch Performance

DTC P0708

Transmission Range (TR) Switch Circuit High Voltage

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 P0721

Output Speed Sensor Performance

DTC P0722

Output Speed Sensor Circuit Low Voltage

DTC P0724

Brake Switch Circuit High Input

DTC P0726

Engine Speed Circuit Performance

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 P0740

TCC Enable Solenoid Circuit Electrical

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

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 P0763

Shift Solenoid (SS) 3 Control Circuit High Voltage

DTC P0768

Shift Solenoid (SS) 4 Control Circuit High Voltage

DTC P0773

Torque Converter Clutch (TCC) Enable Solenoid Control Circuit

DTC P0778

Pressure Proportional to Current (PPC) solenoid Circuit

DTC P0785

3-2 Shift Solenoid Circuit Electrical

DTC P0840

Pressure Switch Manifold (PSM) Switch C Circuit

DTC P0841

Pressure Switch Manifold (PSM) Switch C Circuit

DTC P0842

Pressure Switch Manifold (PSM) Switch C Circuit

DTC P0843

Pressure Switch Manifold (PSM) Switch C Circuit

DTC P0845

Pressure Switch Manifold (PSM) Switch D Circuit

DTC P0846

Pressure Switch Manifold (PSM) Switch D Circuit

DTC P0847

Pressure Switch Manifold (PSM) Switch D Circuit

DTC P0848

Pressure Switch Manifold (PSM) Switch D Circuit

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 P1120

Throttle Position (TP) Sensor 1 Circuit

DTC P1121

Throttle Position (TP) Sensor Circuit Intermittent High Voltage

DTC P1122

Throttle Position (TP) Sensor Circuit Intermittent Low Voltage

DTC P1125

Accelerator Pedal Position (APP) System

DTC P1133 or P1153

HO2S Insufficient Switching

DTC P1134 or P1154

HO2S Transition Time Ratio

DTC P1172

Sec Fuel Pump Insufficient/No Fuel Flow

DTC P1220

Throttle Position (TP) Sensor 2 Circuit

DTC P1221

Throttle Position (TP) Sensor 1- 2 Correlation

DTC P1223, P1226, P1229, P1232, P1235, P1238, P1241, or P1244

Injector Output Circuit

DTC P1258

Engine Coolant Overtemperature - Protection Mode Active

DTC P1261

Injector Positive Voltage Control Circuit

DTC P1262

Injector Positive Voltage Control Circuit Group 2

DTC P1270

Accelerator Pedal Position (APP) Sensor Analog to Digital Performance

DTC P1271

Accelerator Pedal Position (APP) Sensor 1-2 Correlation

DTC P1272

Accelerator Pedal Position (APP) Sensor 2-3 Correlation

DTC P1273

Accelerator Pedal Position (APP) Sensor 1-3 Correlation

DTC P1275

Accelerator Pedal Position (APP) Sensor 1 Circuit

DTC P1276

Accelerator Pedal Position (APP) Sensor 1 Performance

DTC P1277

Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage

DTC P1278

Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage

DTC P1280

Accelerator Pedal Position (APP) Sensor 2 Circuit

DTC P1281

Accelerator Pedal Position (APP) Sensor 2 Performance

DTC P1282

Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage

DTC P1283

Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage

DTC P1285

Accelerator Pedal Position (APP) Sensor 3 Circuit

DTC P1286

Accelerator Pedal Position (APP) Sensor 3 Performance

DTC P1287

Accelerator Pedal Position (APP) Sensor 3 Circuit Low Voltage

DTC P1288

Accelerator Pedal Position (APP) Sensor 3 Circuit High Voltage

DTC P1336

Crankshaft Position (CKP) System Variation Not Learned

DTC P1345

Crankshaft Position (CKP)-Camshaft Position (CMP) 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 P1415 or P1416

Secondary Air Injection (AIR) System

DTC P1431

Fuel Level Sensor 2 Performance

DTC P1432

Fuel Level Sensor 2 Circuit Low Voltage

DTC P1433

Fuel Level Sensor 2 Circuit High Voltage

DTC P1441

Evaporative Emission (EVAP) System Flow During Non-Purge

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 P1517

Throttle Actuator Control (TAC) Module Performance

DTC P1518

Throttle Actuator Control (TAC) Module Serial Data Circuit

DTC P1550

Fuel Injector Control Module System Voltage

DTC P1574

Stoplamp Switch Circuit

DTC P1626

Theft Deterrent Fuel Enable Signal Lost

DTC P1631

Theft Deterrent Start Enable Signal Not Correct

DTC P1635

5 Volt Reference 1 Circuit

DTC P1637

Generator L-Terminal Circuit

DTC P1638

Generator F-Terminal Circuit

DTC P1639

5 Volt Reference 2 Circuit

DTC P1643

Wait to Start Lamp Control Circuit

DTC P1658

Fuel Injector Control Module Driver Performance

DTC P1688

Throttle Kickdown Signal Circuit

DTC P1709

Transmission Pressure Switch Solenoid E Circuit

DTC P1710

Transmission Pressure Switch Solenoid E Circuit Stuck Open

DTC P1711

Transmission Pressure Switch Solenoid E Circuit Stuck Closed

DTC P1712

Transmission Pressure Switch Solenoid E Circuit High

DTC P1713

Transmission Reverse Pressure Switch Circuit Malfunction

DTC P1714

Transmission Reverse Pressure Switch Circuit Stuck Open

DTC P1720

Solenoid A Controlled Clutch Stuck Off

DTC P1721

Solenoid B Controlled Clutch Stuck Off

DTC P1723

Solenoid A Controlled Clutch Stuck On

DTC P1724

Solenoid B Controlled Clutch Stuck On

DTC P1726

Solenoid D Engaged During Upshift

DTC P1727

Solenoid E Engaged During Upshift

DTC P1760

TCM Supply Voltage

DTC P1779

Engine Torque Delivered To TCM Signal

DTC P1781

Transmission Control Module (TCM) MIL Request Circuit

DTC P1810

TFP Valve Position Switch Circuit

DTC P1860

TCC PWM Solenoid Circuit Electrical

DTC P1870

Transmission Component Slipping

DTC P1875

4WD Low Switch Circuit Electrical

DTC U1000 and U1255

Class 2 Communication Malfunction

DTC U1001-U1254

Loss of XXX Communications

DTC U1300

Class 2 Data Link Low

DTC U1301

Class 2 Data Link High

DTC U1500

Communication (Front to Rear) State of Health

DTC U1800

Lost Communications With Fuel Injector Control Module (FICM)

DTC U2104

Controller Area Network (CAN) Bus Reset Counter Overrun

DTC U2106

Lost Communications With Transmission Control System