Diagnostic Trouble Code Definitions

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC ⁽¹⁾

Description

Action

B0016

Right Front Frontal Deployment Loop Resistance Low

⁽²⁾

B0017

Right Front Frontal Deployment Loop Open

⁽²⁾

B0018

Right Front Frontal Deployment Loop Short To Ground/Voltage Out Of Range

⁽²⁾

B0022

Left Front Frontal Deployment Loop Resistance Low

⁽²⁾

B0024

Left Front Frontal Deployment Loop Short To Ground/Voltage Out Of Range

⁽²⁾

B0026

Left Front Frontal Deployment Loop Open

⁽²⁾

B0035

ADS Closed/Short To Ground

⁽²⁾

B0036

ADS Open/Missing/Short To Battery

⁽²⁾

B0051

Deployment Commanded

⁽²⁾

B0053

Deployment Commanded With Loop Malfunctions Present

⁽²⁾

B0090

Active Switch Voltage Out Of Range

⁽²⁾

B0091

Active Switch Wrong State

⁽²⁾

B0160

Outside Air Temperature Sensor Circuit Low

⁽³⁾

B0161

Outside Air Temperature Sensor Circuit High

⁽³⁾

B0165

Passenger Compartment Temp Sensor 1 Circuit Low

⁽³⁾

B0166

Passenger Compartment Temp Sensor 1 Circuit High

⁽³⁾

B0175

Output Air Temp Sensor 1 Circuit Low

⁽³⁾

B0176

Output Air Temp Sensor 1 Circuit High

⁽³⁾

B0180

Output Air Temp Sensor 2 Circuit Low

⁽³⁾

B0181

Output Air Temp Sensor 2 Circuit High

⁽³⁾

B0185

Solar Load Sensor 1 Circuit Low

⁽³⁾

B0186

Solar Load Sensor 1 Circuit High

⁽³⁾

B0408

Temperature Control 1 Circuit Malfunction

⁽³⁾

B0415

Temperature Control 1 Circuit Low

⁽³⁾

B0416

Temperature Control 1 Circuit High

⁽³⁾

B1000

Body Control Module Malfunction

⁽⁴⁾

B1004

Undefined Fault

⁽⁵⁾

B1007

Undefined Fault

⁽⁵⁾

B1009

Undefined Fault

⁽⁵⁾

B1327

Undefined Fault

⁽⁵⁾

B1328

Undefined Fault

⁽⁵⁾

B1367

IPC Ignition 0 Circuit Low

⁽⁶⁾

B1397

Device Voltage Reference Out No. 1 Circuit Low

⁽⁴⁾

B1398

Device Voltage Reference Out No. 1 Circuit High

⁽⁴⁾

B1477

RAP Circuit Low

⁽⁴⁾

B1478

RAP Circuit High

⁽⁴⁾

B1480

Battery Rundown Protection Circuit Malfunction

⁽⁴⁾

B1513 & B1514

Undefined Fault

⁽⁵⁾

B1770

Left Front Seat Motor 2 Horizontal Circuit Malfunction

⁽⁷⁾

B1775

Left Front Seat Motor 3 Vertical Circuit Malfunction

⁽⁷⁾

B1780

Left Front Seat Motor 4 Rear Vertical Circuit Malfunction

⁽⁷⁾

B1785

Left Front Seat Motor 5 Recline Circuit Malfunction

⁽⁷⁾

B1826

Driver Recline Sensor Circuit Performance

⁽⁷⁾

B2356

Driver Front Vertical Sensor Circuit Performance

⁽⁷⁾

B2366

Driver Rear Vertical Sensor Circuit Performance

⁽⁷⁾

B2376

Driver Horizontal Sensor Circuit Performance

⁽⁷⁾

B2462

GPS Signal Error

⁽⁸⁾

B2476

OnStar® Switch Fault

⁽⁸⁾

B2527

Front Foglight Circuit Low

⁽⁹⁾

B2537

Rear Foglight Circuit Low

⁽⁹⁾

B2577

ALC Headlight Control Circuit Low

⁽¹⁰⁾

B2585

Park Light Control Circuit Malfunction

⁽⁹⁾

B2600

DRL Light Circuit Malfunction

⁽¹⁰⁾

B2613

Passenger Compartment Dimming 1 Circuit High

⁽¹¹⁾

B2617

Passenger Compartment Dimming 2 Circuit Low

⁽¹¹⁾

B2618

Passenger Compartment Dimming 2 Circuit High

⁽¹¹⁾

B2647

Ambient Light Sensor Short To Ground/Open

⁽¹⁰⁾

B2648

Ambient Light Sensor Short To Battery

⁽¹⁰⁾

B2722

Tow/Haul Switch Short To Ground

B2725

ATC Mode Switch Circuit Malfunction

⁽¹²⁾

B2752

Horn Relay Coil Circuit Low

⁽¹³⁾

B2947

Security System Sensor Power Circuit Low

⁽¹⁴⁾

B2948

Security System Sensor Power Circuit High

⁽¹⁴⁾

B2957

Security System Sensor Data Circuit Low

⁽¹⁴⁾

B2958

Security System Sensor Data Circuit High

⁽¹⁴⁾

B2960

Security System Sensor Data Incorrect But Valid

⁽¹⁴⁾

B2961

Key In Ignition Circuit Malfunction

⁽¹⁴⁾

B2973

Left Front Door Key Switch Circuit Low

⁽¹⁴⁾

B3031

Security System Controller In Learn Mode

⁽¹⁴⁾

B3033

Security System Indicates Tamper

⁽¹⁴⁾

B3102

Keyless Entry Data Link Circuit Low

⁽¹⁵⁾

B3137

All Door Lock Circuit Low

⁽¹⁶⁾

B3138

All Door Lock Circuit High

⁽¹⁶⁾

B3147

Right Front Unlock Switch Circuit Low

⁽¹⁶⁾

B3148

Right Front Unlock Switch Circuit High

⁽¹⁶⁾

B3792

Seat Switch Circuit Malfunction

⁽⁷⁾

C0221-C0227

Wheel Speed Sensor Fault

⁽¹⁷⁾

C0229

Wheel Speed Sensor Signal Erratic

⁽¹⁷⁾

C0235-C0237

Vehicle Speed Sensor Fault

⁽¹⁷⁾

C0238

Vehicle Speed Input Variation

⁽¹⁷⁾

C0241-C0254, C0265, C0266

Electronic Brake Control Module Internal Fault

⁽¹⁷⁾

C0267, C0268

ABS Pump Fault

⁽¹⁷⁾

C0269, C0274

ABS Solenoid Fault

⁽¹⁷⁾

C0271-C0273, C0284

Electronic Brake Control Module Internal Fault

⁽¹⁷⁾

C0281

Brake Switch Fault

⁽¹⁷⁾

P0461

Fuel Sending Unit Fault

⁽⁶⁾

P0462

Fuel Level Signal Low

⁽⁶⁾

P0463

Fuel Level Signal High

⁽⁶⁾

P0562

Charging System Voltage Low

⁽¹⁸⁾

P0563

Charging System Voltage High

⁽¹⁸⁾

P0608

Vehicle Speed Output Out Of Range

⁽⁶⁾

P0621

Generator Turn On Signal Fault

⁽¹⁸⁾

P0622

Pulse Width Modulator Fault

⁽¹⁸⁾

P0654

Engine Speed Output Out Of Range

⁽⁶⁾

P1626

Powertrain Control Module To Body Control Module Communications Fault

⁽¹⁴⁾

P1631

Password Fault

⁽¹⁴⁾

P1632

Fuel Disable Password Received

⁽¹⁴⁾

P1637

Generator Turn On Signal Fault

⁽¹⁴⁾

P1638

Pulse Width Modulator Fault

⁽¹⁴⁾

PXXXX

Powertrain Control Module Faults

⁽¹⁹⁾

U1000 & U1255

CLASS 2 COMMUNICATION MALFUNCTION

⁽⁴⁾

U1001-U1254

LOSS OF UXXX COMMUNICATIONS

⁽⁴⁾

U1300

Class 2 Serial Data Link Low

⁽⁴⁾

U1301

Class 2 Serial Data Link High

⁽⁴⁾

U1500

Vehicle Control Module To Vehicle Interface Unit Communications Fault

⁽⁸⁾

⁽¹⁾	For DTCs not listed, repair appropriate system as necessary.

⁽²⁾	For information on air bag DIAGNOSIS & TESTING or DISPOSAL PROCEDURES, see lemon-25® AIR BAG SERVICE & REPAIR MANUAL, DOMESTIC & IMPORTED MODELS.

⁽³⁾	See appropriate AUTOMATIC A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING

⁽⁴⁾	See DIAGNOSTIC TESTS for test and repair procedures.

⁽⁵⁾	Testing and repair information not available from manufacturer.

⁽⁶⁾	See ANALOG INSTRUMENT PANELS - BLAZER, BRAVADA, ENVOY, JIMMY, SONOMA & S10 PICKUP article.

⁽⁷⁾	See appropriate POWER SEATS article.

⁽⁸⁾	OnStar® communication system fault.

⁽⁹⁾	See appropriate EXTERIOR LIGHTS article.

⁽¹⁰⁾	See appropriate HEADLIGHT SYSTEMS & DAYTIME RUNNING LIGHTS article.

⁽¹¹⁾	See appropriate ILLUMINATION/INTERIOR LIGHTS article.

⁽¹²⁾	Transfer case DTC.

⁽¹³⁾	See STEERING COLUMN SWITCHES - TRUCKS - EXCEPT TRACKER article.

⁽¹⁴⁾	See ANTI-THEFT SYSTEMS - BLAZER, BRAVADA, ENVOY, JIMMY, SONOMA & S10 PICKUP article.

⁽¹⁵⁾	See REMOTE KEYLESS ENTRY SYSTEMS - BLAZER, BRAVADA, ENVOY, JIMMY, SONOMA & S10 PICKUP article.

⁽¹⁶⁾	See POWER DOOR LOCKS - BLAZER, BRAVADA, ENVOY, JIMMY, SONOMA & S-10 PICKUP article.

⁽¹⁷⁾	See appropriate ANTI-LOCK article in BRAKES.

⁽¹⁸⁾	See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.

⁽¹⁹⁾	For powertrain control module diagnostic trouble codes, see appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.