GM Service Manual Online
For 1990-2009 cars only

DTC

Descriptor

DTC C0221-C0237

Wheel Speed Sensor Circuit

DTC C0238

Wheel Speed Mismatch

DTC C0241-C0258

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

EBCM Malfunction

DTC C0279

Trim Level Not Selected

DTC C0281

Brake Switch Circuit

DTC C0286

ABS Indicator Lamp Circuit Shorted to B+

DTC C0287

Delivered Torque Circuit

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 P0117

Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

DTC P0118

Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

DTC P0131 or P0151

HO2S Circuit Low Voltage

DTC P0132 or P0152

HO2S Circuit High Voltage

DTC P0134 or P0154

HO2S Circuit Insufficient Activity

DTC P0200

Injector Control Circuit

DTC P0230

Fuel Pump Relay Control Circuit

DTC P0325

Knock Sensor Module Performance

DTC P0327 or P0332

Knock Sensor Circuit

DTC P0335

Crankshaft Position (CKP) Sensor Circuit

DTC P0336

Crankshaft Position (CKP) Sensor Performance

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 P0404

Exhaust Gas Recirculation (EGR) Open Position Performance

DTC P0405

Exhaust Gas Recirculation (EGR) Position Sensor Circuit Low Voltage

DTC P0443

Evaporative Emission (EVAP) Purge Solenoid Control Circuit

DTC P0506 or P0507

Idle Speed Low

DTC P0522

Idle Speed High

DTC P0523

Engine Oil Pressure (EOP) Sensor Circuit Low Voltage

DTC P0562

Engine Oil Pressure (EOP) Sensor Circuit High Voltage

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 P0608

Vehicle Speed Output Circuit

DTC P0615

Starter Relay Control Circuit

DTC P0650

Malfunction Indicator Lamp (MIL) Control Circuit

DTC P0704

Clutch Switch 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 P1125

Accelerator Pedal Position (APP) System

DTC P1220

Throttle Position (TP) Sensor 2 Circuit

DTC P1221

Throttle Position (TP) Sensor 1- 2 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 P1404

Exhaust Gas Recirculation (EGR) Closed Position Performance

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 P1574

Stoplamp Switch Circuit

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 U1000 and U1255

Class 2 Communication Malfunction

DTC U1001-U1254

Loss of XXX Communications

DTC U1300, U1301, or U1305

Class 2 Data Link Shorted