GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

DTC 001

DTC 002

DTC 003

DTC 004

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 B0035

ADS Closed/Shorted to Ground

DTC B0036

ADS Open/Missing/Shorted to Battery

DTC B0051

Deployment Commanded

DTC B0053

Deployment Commanded with Loop Malfunctions Present

DTC B0090

Active Switch Voltage Out of Range

DTC B0091

Active Switch: Wrong State

DTC B1000

ECU Malfunction

DTC B1001

Option Configuration Error

DTC B1025, B1035, B1045, or B1055

Audio [+] Output Circuit

DTC B1327

Device Power Circuit Low

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 or B1478

Retained Accessory Power Circuit

DTC B1480

Battery Rundown Protection Circuit Malf

DTC B1770, B1775, B1780, B1785, B1790, B1805, or B2415

Seat Motor(s) Overcurrent

DTC B1826

Driver Recline Sensor CKT Performance

DTC B2356, B2366, or B2376

Seat Position Sensor Circuit

DTC B2527

Front Fog Lamp Circuit Low

DTC B2537

Rear Foglamps Circuit Low

DTC B2577

Headlamp Control Circuit Low

DTC B2585

Parklamp Control Circuit Malfunction

DTC B2600

Daytime Running Lamp 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 B2647

Ambient Light Sensor Circuit Low

DTC B2648

Ambient Light Sensor Circuit High

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

Door Lock Circuit

DTC B3792

Seat Switch CKT Malfunction

DTC C0221-C0227

Front Wheel Speed Sensor Circuit

DTC C0229

Drop Out of Front Wheel Speed Signals

DTC C0235-C0237 or 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 C0281

Brake Switch Circuit

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

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 C0550

ECU Malfunction

DTC C0611

VIN Information Error

DTC P0016

Crankshaft Position (CKP)-Camshaft Position (CMP) Correlation

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 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 Performance

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, P0141, or P0155

HO2S Heater Performance

DTC P0136

O2 Sensor Circuit Bank 1 Sensor 2

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 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 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

Knock Sensor (KS) Circuit

DTC P0335

Crankshaft Position (CKP) Sensor Circuit

DTC P0336

Crankshaft Position (CKP) Sensor Performance

DTC P0341

Camshaft Position (CMP) Sensor Performance

DTC P0351

Ignition Coil 1 Control Circuit

DTC P0420

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 P0496

Evaporative Emission (EVAP) System Flow During Non-Purge

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 P0562

System Voltage Low

DTC P0563

System Voltage High

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 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 P0833

Clutch Pedal Switch "B" Circuit

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 P1121

Throttle Position (TP) Sensor Circuit Intermittent High Voltage

DTC P1122

Throttle Position (TP) Sensor Circuit Intermittent Low Voltage

DTC P1133 or P1153

HO2S Insufficient Switching

DTC P1134 or P1154

Oxygen Sensor Circuit - Transition Switch Time Ratio

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 P1626

Theft Deterrent Start Enable Signal Lost

DTC P1631

Theft Deterrent Start Enable Signal Not Correct

DTC P1632

Theft Deterrent Start Disable Signal Received

DTC P1810

Transmission Fluid Pressure (TFP) Position Switch Circuit

DTC P2761

Torque Converter Clutch Pressure Control Solenoid Control Circuit/Open

DTC P2771

Four Wheel Drive (4WD) Low Switch Circuit

DTC U1000 and U1255

Class 2 Communication Malfunction

DTC U1001-U1254

Lost Communications With XXX

DTC U1300, U1301, or U1305

Class 2 Data Link Shorted