GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

DTC 021 and/or 031

Courtesy Lamps Feed Shorted to Ground

DTC 022 and/or 032

Courtesy Lamps Return Shorted to Battery

DTC 023 or 033

RAP Feed Shorted to Ground or Battery

DTC 24/34

Seatbelt Indicator Shorted to Ground or Battery

DTC 025 and/or 035

Security Indicator Status

DTC 041

Last Message Received Valid

DTC 042

Last Message Received Invalid

DTC 043

Last Message Received with Sumcheck Error

DTC 044

Last Message Received with Encryption Error

DTC 045

Receiver Processing in 20 Second Lockout

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 B0051

Deployment Commanded

DTC B0053

Deployment Commanded with Loop Malfunctions Present

DTC B0670

Inflatable Restraint System Indicator #1 (Main Indicator) Circuit Malfunction

DTC B1000

ECU Malfunction

DTC B1001

Option Configuration Error

DTC C0035-C0051

Wheel Speed Sensor Circuit

DTC C0060-C0095

EBCM Internal Solenoid Circuit

DTC C0100 or C0105

EBCM Internal Solenoid Circuit

DTC C0110

Pump Motor Circuit Malfunction

DTC C0121

Valve Relay Circuit Malfunction

DTC C0161

ABS/TCS Brake Switch Circuit Malfunction

DTC C0166 or C0171

EBCM Internal Solenoid Circuit

DTC C0181

Throttle Reduction Motor CKT Malfunction

DTC C0182

Throttle Reduction Motor CKT Range Perf

DTC C0235-C0237 or P1504

Rear Wheel Speed Sensor Circuit

DTC C0238

TCS TP Sensor Comparison Malfunction

DTC C0239

TCS Spark Retard Monitoring Malfunction

DTC C0240

PCM Traction Control Not Allowed

DTC C0241 or P1571

Powertrain Indicated Traction Control Malfunction

DTC C0244 or P1689

Delivered Torque Circuit

DTC C0245

Wheel Speed Sensor Frequency Error

DTC C0266

ADS Controller Malfunction

DTC C0550

ECU Malfunction

DTC C0896

Device Voltage Range/Performance

DTC C0901

Device #2 Voltage Low

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) Sensor 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

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 P0130

HO2S Circuit Closed Loop (CL) Performance Sensor 1

DTC P0131

HO2S Circuit Low Voltage Bank 1 Sensor 1

DTC P0131 or P0151

HO2S Circuit Low Voltage

DTC P0132

HO2S Circuit High Voltage Bank 1 Sensor 1

DTC P0132 or P0152

HO2S Circuit High Voltage

DTC P0133

HO2S Slow Response Bank 1 Sensor 1

DTC P0133 or P0153

HO2S Slow Response

DTC P0134

HO2S Circuit Insufficient Activity Bank 1 Sensor 1

DTC P0134 or P0154

HO2S Circuit Insufficient Activity

DTC P0135

HO2S Heater Performance Bank 1 Sensor 1

DTC P0135, P0141, P0155, or P0161

HO2S Heater Performance

DTC P0137

HO2S Circuit Low Voltage Bank 1 Sensor 2

DTC P0137 or P0157

HO2S Circuit Low Voltage

DTC P0138

HO2S Circuit High Voltage Bank 1 Sensor 2

DTC P0138 or P0158

HO2S Circuit High Voltage

DTC P0140

HO2S Circuit Insufficient Activity Bank 1 Sensor 2

DTC P0140 or P0160

HO2S Circuit Insufficient Activity

DTC P0141

HO2S Heater Performance Bank 1 Sensor 2

DTC P0150

HO2S Circuit Closed Loop (CL) Performance Bank 2 Sensor 1

DTC P0151

HO2S Circuit Low Voltage Bank 2 Sensor 1

DTC P0152

HO2S Circuit High Voltage Bank 2 Sensor 1

DTC P0153

HO2S Slow Response Bank 2 Sensor 1

DTC P0154

HO2S Circuit Insufficient Activity Bank 2 Sensor 1

DTC P0155

HO2S Heater Performance Bank 2 Sensor 1

DTC P0171 or P0174

Fuel Trim System Lean

DTC P0172 or P0175

Fuel Trim System Rich

DTC P0200

Injector Control Circuit

DTC P0201-P0206

Injector Control Circuit

DTC P0218

Transmission Fluid Overtemperature

DTC P0230

Fuel Pump Relay Control Circuit

DTC P0300

Engine Misfire Detected

DTC P0325

Knock Sensor (KS) Circuit

DTC P0327 or P0332

Knock Sensor Circuit

DTC P0335

Crankshaft Position (CKP) Sensor Circuit

DTC P0336

Crankshaft Position (CKP) 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-P0358

Ignition Coil Control Circuit

DTC P0401

Exhaust Gas Recirculation (EGR) Flow Insufficient

DTC P0403

Exhaust Gas Recirculation (EGR) Solenoid Control Circuit

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

Catalyst System Low Efficiency

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 P0480

Cooling Fan Relay 1 Control Circuit

DTC P0481

Cooling Fan Relay 2 and 3 Control Circuit

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 P0530

Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit

DTC P0560

System Voltage

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 P0574

Vehicle Speed Too High - Cruise Control Disabled

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

ECU Malfunction

DTC P0608

Vehicle Speed Output Circuit

DTC P0615

Starter Relay Control Circuit

DTC P0620

Generator Performance

DTC P0645

Air Conditioning (A/C) Clutch Relay Control Circuit

DTC P0650

Malfunction Indicator Lamp (MIL) Control Circuit

DTC P0704

Clutch Switch Circuit

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 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 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 Valve Performance - No Third or Fourth Gear

DTC P0758

2-3 Shift Solenoid Circuit Electrical

DTC P0785

3-2 Shift Solenoid Circuit Electrical

DTC P0801

Reverse Inhibit Solenoid Control Circuit

DTC P0803

Skip Shift Solenoid Control Circuit

DTC P0804

Skip Shift Lamp Control Circuit

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 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

HO2S Insufficient Switching Bank 1 Sensor 1

DTC P1133 or P1153

HO2S Insufficient Switching

DTC P1134

HO2S Transition Time Ratio Bank 1 Sensor 1

DTC P1134 or P1154

HO2S Transition Time Ratio

DTC P1153

HO2S Insufficient Switching Bank 2 Sensor 1

DTC P1154

HO2S Transition Time Ratio Bank 2 Sensor 1

DTC P1220

Throttle Position (TP) Sensor 2 Circuit

DTC P1221

Throttle Position (TP) Sensor 1- 2 Correlation

DTC P1258

Engine Coolant Overtemperature - Protection Mode Active

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 P1280

Accelerator Pedal Position (APP) Sensor 2 Circuit

DTC P1281

Accelerator Pedal Position (APP) Sensor 2 Performance

DTC P1285

Accelerator Pedal Position (APP) Sensor 3 Circuit

DTC P1286

Accelerator Pedal Position (APP) Sensor 3 Performance

DTC P1336

Crankshaft Position (CKP) System Variation Not Learned

DTC P1351

Ignition Coil Control Circuit High Voltage

DTC P1352

Ignition Bypass Circuit High Voltage

DTC P1361

Ignition Control (IC) Circuit Low Voltage

DTC P1362

Ignition Bypass Circuit Low Voltage

DTC P1374

Crankshaft Position (CKP) High to Low Resolution Frequency 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 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 P1519

Throttle Actuator Control (TAC) Module Internal Circuit

DTC P1523

Throttle Closed Position Performance

DTC P1539

Air Conditioning (A/C) Clutch Feedback Circuit High Voltage

DTC P1546

Air Conditioning (A/C) Clutch Feedback Circuit Low Voltage

DTC P1554

Cruise Control Feedback Circuit

DTC P1574

Stoplamp Switch Circuit

DTC P1585

Cruise Control Inhibit Output Circuit

DTC P1586

Cruise Control Brake Switch 2 Circuit

DTC P1626

Theft Deterrent Fuel Enable Signal Lost

DTC P1629

Theft Deterrent Fuel Enable Signal Not Received

DTC P1635

5 Volt Reference 1 Circuit

DTC P1637

Generator L-Terminal Circuit

DTC P1639

5 Volt Reference 2 Circuit

DTC P1810

TFP Valve Position Switch Circuit

DTC P1860

TCC PWM Solenoid Circuit Electrical

DTC P1870

Transmission Component Slipping

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