GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

DTC 001

Inside Air Temp Sensor Circuit Shorted

DTC 002

Inside Air Temp Sensor Circuit Open

DTC 003

Outside Air Temp Sensor Circuit Shorted

DTC 004

Outside Air Temp Sensor Circuit Open

DTC 006

RH air Door Motor Circuit Open or Shorted

DTC 007

UART Serial Data Line Fault

DTC 008

Sun Load Temp Sensor Open

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 B0686

Sec Sys Ind Circuit Range (Over Current)

DTC B0687

Security System Indicator Circuit Low

DTC B0688

Security System Indicator Circuit High

DTC B0689

Sec Sys Indicator Circuit Open

DTC B1000

ECU Malfunction

DTC B2462

GPS Signal Error

DTC B2476

Cellular Phone Select Service Switch

DTC B2955

Security System Sensor Data CKT Malf

DTC B2960

Sec Sys Sensor Data Incorrect but Valid

DTC C0035-C0051

Wheel Speed Sensor Circuit

DTC C0060-C0095

EBCM Internal Solenoid Circuit

DTC C0110

Pump Motor Circuit Malfunction

DTC C0121

Valve Relay Circuit Malfunction

DTC C0141-C0156

EBCM Internal Solenoid Circuit

DTC C0161

ABS/TCS Brake Switch Circuit Malfunction

DTC C0235-C0237 or P1504

Rear Wheel Speed Sensor Circuit

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 C0450

Steering Assist Control Actuator Circuit Malfunction

DTC C0550

ECU Malfunction

DTC C0896

Device Voltage Range/Performance

DTC P0030

HO2S Heater Control Circuit Sensor 1

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 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 P0130

HO2S Circuit Closed Loop (CL) Performance Sensor 1

DTC P0131

HO2S Circuit Low Voltage Sensor 1

DTC P0132

HO2S Circuit High Voltage Sensor 1

DTC P0133

HO2S Slow Response Sensor 1

DTC P0134

HO2S Circuit Insufficient Activity Sensor 1

DTC P0135

HO2S Heater Performance Sensor 1

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 P0141

HO2S Heater Performance Sensor 2

DTC P0171

Fuel Trim System Lean

DTC P0172

Fuel Trim System Rich

DTC P0201-P0206

Injector Control Circuit

DTC P0218

Transmission Fluid Overtemperature

DTC P0230

Fuel Pump Relay Control Circuit

DTC P0243

Supercharger Boost Solenoid Control Circuit

DTC P0300

Engine Misfire Detected

DTC P0325

Knock Sensor (KS) Circuit

DTC P0327

Knock Sensor (KS) Circuit

DTC P0327 or P0332

Knock Sensor Circuit

DTC P0336

Crankshaft Position (CKP) Sensor Circuit

DTC P0341

Camshaft Position (CMP) Sensor Performance

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 P0420

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

ECU Malfunction

DTC P0620

Generator Performance

DTC P0650

Malfunction Indicator Lamp (MIL) Control Circuit

DTC P0656

Fuel Level Output 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 P0716

Input Speed Sensor Circuit Intermittent

DTC P0717

Input Speed Sensor Circuit Low Input

DTC P0719

Brake Switch Circuit Low Input

DTC P0724

Brake Switch Circuit High Input

DTC P0730

Incorrect Gear Ratio

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 - No First or Fourth Gear

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 - No First or Second Gear

DTC P0757

2-3 Shift Solenoid Valve Performance - No Third or Fourth Gear

DTC P0758

2-3 Shift Solenoid Circuit Electrical

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

HO2S Insufficient Switching Sensor 1

DTC P1134

HO2S Transition Time Ratio Sensor 1

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 P1404

Exhaust Gas Recirculation (EGR) Closed Position Performance

DTC P1441

Evaporative Emission (EVAP) System Flow During Non-Purge

DTC P1546

Air Conditioning (A/C) Clutch Relay Control Circuit

DTC P1554

Cruise Control Feedback Circuit

DTC P1585

Cruise Control Inhibit Output Circuit

DTC P1626

Theft Deterrent Fuel Enable Signal Lost

DTC P1629

Theft Deterrent Fuel Enable Signal Not Received

DTC P1630

Theft Deterrent Learn Mode Active

DTC P1631

Theft Deterrent Start Enable Signal Not Correct

DTC P1635

5 Volt Reference 1 Circuit

DTC P1637

Charging System Lamp Control Circuit

DTC P1639

5 Volt Reference 2 Circuit

DTC P1640

Control Module Output A Circuit

DTC P1650

Control Module Output B Circuit

DTC P1653

Low Engine Oil Level Lamp Control Circuit

DTC P1660

Control Module Output C Circuit

DTC P1663

Change Engine Oil Lamp Control Circuit

DTC P1670

Control Module Output D Circuit

DTC P1673

Engine Coolant Temperature Lamp Control Circuit

DTC P1811

Maximum Adapt and Long Shift

DTC P1814

Torque Converter Overstressed

DTC P1819

Internal Mode Switch-No Start/Wrong Range

DTC P1820

Internal Mode Switch A Circuit Low Voltage

DTC P1822

Internal Mode Switch B Circuit High Voltage

DTC P1823

Internal Mode Switch P Circuit Low Voltage

DTC P1825

Internal Mode Switch-Invalid Range

DTC P1826

Internal Mode Switch C Circuit High Voltage

DTC P1860

TCC PWM Solenoid Circuit Electrical

DTC P1887

TCC Release Switch Circuit

DTC U1000 and U1255

Class 2 Communication Malfunction

DTC U1001-U1254

Lost Communication with XXX

DTC U1300, U1301, or U1305

Class 2 Data Link Shorted

DTC U1304

Lost Communication with UART System

DTC U1500

Inter-Device Dedicated Bus Malfunction