GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Firebird 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L60-E 🢒 Diagnostic Trouble Code (DTC) List

The service information contained in this manual refers to the Federal calibration package. The export change is NOT reflected in the service information on the DTC's diagnostic support information page or in the Repair Instructions. The DTC Type table information refers to domestic and Export calibration packages. Export vehicles may have differences in DTC types that will affect Malfunction Indicator Lamp (MIL) operation. Certain DTCs have been changed from type A to type C or, in some cases, type X. When a type A diagnostic fails, a DTC is set immediately and the Malfunction Indicator Lamp (MIL) is illuminated. When a type B DTC diagnostic fails, the Malfunction Indicator Lamp (MIL) will illuminate if the fault is present after two consecutive ignition cycles. A type C DTC will set after one failure and be stored in history but will not illuminate the Malfunction Indicator Lamp (MIL). Type X DTCs have been turned off (the diagnostic does not run, no codes are stored, and the Malfunction Indicator Lamp (MIL) will not illuminate.

If a system is malfunctioning and the associated DTC has been disabled (Type X), it may be beneficial to use the diagnostic table as a guide to aid in diagnosis. Many of the DTC tables include a functional check of the system that may pinpoint a problem. However, it is important to remember that the DTC tables are specifically designed for use only when a DTC is set. Therefore, a thorough understanding of the normal operation of the system being diagnosed is necessary and use of the tables for this purpose is at the discretion of the technician.

Important: An export vehicle may have unrequired emissions components removed.

Important: For Automatic Transmission DTC types, refer to Diagnostic Trouble Code Identification .

Diagnostic Trouble Code (DTC) Type Table

DTC

Description

Domestic

Export Unleaded Fuel

RPO K29, and VE1

Export Leaded Fuel

RPO NM8

P0101

Mass Air Flow (MAF) System Performance

B

C

C

P0102

Mass Air Flow (MAF) Sensor Circuit Low Frequency

B

B

B

P0103

Mass Air Flow (MAF) Sensor Circuit High Frequency

B

B

B

P0107

Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

B

B

B

P0108

Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

B

B

B

P0112

Intake Air Temperature (IAT) Sensor Circuit Low Voltage

B

B

B

P0113

Intake Air Temperature (IAT) Sensor Circuit High Voltage

B

B

B

P0117

Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage

B

B

B

P0118

Engine Coolant Temperature (ECT) Sensor Circuit High Voltage

B

B

B

P0121

TP Sensor Circuit Insufficient Activity

B

C

C

P0122

TP Sensor Circuit Low Voltage

B

B

B

P0123

TP Sensor Circuit High Voltage

B

B

B

P0125

Engine Coolant Temperature (ECT) Excessive Time To Closed Loop Fuel Control

B

C

X

P0131

Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 1 Sensor 1

B

B

X

P0132

Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 1

B

B

X

P0133

Heated Oxygen Sensor (HO2S) Slow Response Bank 1 Sensor 1

B

C

X

P0134

Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Bank 1 Sensor 1

B

B

X

P0135

Heated Oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 1

B

C

X

P0137

Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 1 Sensor 2

B

B

X

P0138

Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1 Sensor 2

B

B

X

P0140

Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Bank 1 Sensor 2

B

B

X

P0141

Heated Oxygen Sensor (HO2S) Heater Circuit Bank 1 Sensor 2

B

C

X

P0151

Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 1

B

B

X

P0152

Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 2 Sensor 1

B

B

X

P0153

Heated Oxygen Sensor (HO2S) Slow Response Bank 2 Sensor 1

B

C

X

P0154

Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Bank 2 Sensor 1

B

B

X

P0155

Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 1

B

C

X

P0157

Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 2

B

B

X

P0158

Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 2 Sensor 2

B

B

X

P0160

Heated Oxygen Sensor (HO2S) Circuit Insufficient Signal Activity Bank 2 Sensor 2

B

B

X

P0161

Heated Oxygen Sensor (HO2S) Heater Circuit Bank 2 Sensor 2

B

C

X

P0171

Fuel Trim System Lean Bank 1

B

B

X

P0172

Fuel Trim System Rich Bank 1

B

B

X

P0174

Fuel Trim System Lean Bank 2

B

B

X

P0175

Fuel Trim System Rich Bank 2

B

B

X

P0200

Injector Control Circuit

B

C

C

P0230

Fuel Pump Relay Control Circuit

B

B

B

P0300

Engine Misfire Detected

B

B

(No MIL)

B

(No MIL)

P0325

Knock Sensor (KS) System

B

C

C

P0327

Knock Sensor (KS) Signal Circuit Front

B

C

C

P0332

Knock Sensor (KS) Signal Circuit Rear

B

C

C

P0335

CKP Sensor Circuit

B

B

B

P0336

CKP Sensor Circuit Performance

B

B

B

P0341

CMP Sensor Circuit Performance

B

B

B

P0342

CMP Sensor Circuit Low Voltage

B

B

B

P0343

CMP Sensor Circuit High Voltage

B

B

B

P0351

Ignition Control #1 Circuit

B

B

B

P0352

Ignition Control #2 Circuit

B

B

B

P0353

Ignition Control #3 Circuit

B

B

B

P0354

Ignition Control #4 Circuit

B

B

B

P0355

Ignition Control #5 Circuit

B

B

B

P0356

Ignition Control #6 Circuit

B

B

B

P0357

Ignition Control #7 Circuit

B

B

B

P0358

Ignition Control #8 Circuit

B

B

B

P0401

EGR Flow Insufficient

A

C

X

P0404

EGR System Performance

B

B

X

P0405

EGR Valve Position Sensor Circuit Low Voltage

B

B

X

P0410

AIR System

B

C

X

P0412

AIR Solenoid Relay Control Circuit

B

C

X

P0418

AIR Pump Relay Control Circuit

B

C

X

P0420

TWC System Low Efficiency Bank 1

A

C

X

P0430

TWC System Low Efficiency Bank 2

A

C

X

P0440

EVAP System

A

C

X

P0442

EVAP Control System Small Leak Detected

A

C

X

P0443

EVAP Purge Solenoid Control Circuit

B

C

C

P0446

EVAP Canister Vent Blocked

A

C

X

P0449

EVAP Canister Vent Solenoid Valve Control Circuit

B

C

X

P0452

Fuel Tank Pressure Sensor Circuit Low Voltage

B

C

X

P0453

Fuel Tank Pressure Sensor Circuit High Voltage

B

C

X

P0461

Fuel Level Sensor Circuit Performance

C

C

C

P0462

Fuel Level Sensor Circuit Low Voltage

C

C

C

P0463

Fuel Level Sensor Circuit High Voltage

C

C

C

P0480

FC Relay 1 Control Circuit

B

C

C

P0481

FC Relay 2 and 3 Control Circuit

B

C

C

P0500

VSS Circuit (M/T only)

B

B

X

P0506

Idle Speed Low

B

B

B

P0507

Idle Speed High

B

B

B

P0530

A/C Refrigerant Pressure Sensor Circuit

C

C

C

P0562

System Voltage Low

C

C

C

P0563

System Voltage High

C

C

C

P0601

PCM/VCM Memory

A

A

A

P0602

PCM/VCM Not Programmed

A

A

A

P0604

PCM/VCM RAM Performance

A

A

A

P0608

VSS Output Circuit

C

C

C

P0645

A/C Clutch Relay Control Circuit

C

C

C

P0650

Malfunction Indicator Lamp (MIL) Control Circuit

B

(No MIL)

B

(No MIL)

B

(No MIL)

P0704

Clutch Switch Circuit (M/T only)

C

C

X

P0801

Reverse Inhibit Solenoid Control Circuit (M/T only)

C

C

X

P0803

Skip Shift Solenoid Control Circuit (M/T only)

B

X

X

P1111

Intake Air Temperature (IAT) Sensor Circuit Intermittent High Voltage

C

C

C

P1112

Intake Air Temperature (IAT) Sensor Circuit Intermittent Low Voltage

C

C

C

P1114

ECT Sensor Circuit Intermittent Low Voltage

C

C

C

P1115

ECT Sensor Circuit Intermittent High Voltage

C

C

C

P1121

TP Sensor CKT Intermittent High Voltage

C

C

C

P1122

TP Sensor CKT Intermittent Low Voltage

C

C

C

P1133

Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 1

B

C

X

P1134

Heated Oxygen Sensor (HO2S) Transition Time Ratio Bank 1 Sensor 1

B

C

X

P1153

Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 2 Sensor 1

B

C

X

P1154

Heated Oxygen Sensor (HO2S) Transition Time Ratio Bank 2 Sensor 1

B

C

X

P1258

Engine Coolant Over Temperature-Fuel Disabled

A

A

A

P1336

CKP System Variation Not Learned

A

A

A

P1380

ABS DTC Detected Rough Road Data Unusable

C

X

X

P1381

Misfire Detected-No EBTCM/PCM Serial Data

C

X

X

P1404

EGR Valve Pintle Stuck Open

A

A

X

P1415

AIR System Bank 1

B

C

X

P1416

AIR System Bank 2

B

C

X

P1441

Evaporative Emissions (EVAP) System Flow During Non-Purge

B

C

X

P1539

A/C Clutch Status Circuit High Voltage

C

C

C

P1546

A/C Clutch Status Circuit Low Voltage

C

C

C

P1626

Theft Deterrent System Fuel Enable Circuit

C

C

C

P1635

5 Volt Reference #1 Circuit

B

B

B

P1637

Generator L Terminal Circuit

C

C

C

P1639

5 Volt Reference #2 Circuit

B

B

B