GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1998 🢒 Skylark 🢒 Engine 🢒 Engine Controls - 2.4L 🢒 Diagnostic Trouble Code (DTC) List
Table 1: Export Component Deletion Table

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. 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 drive trips. 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.

An export vehicle may have unrequired emissions components removed. If a component is removed, the deletion table below will mark that components box with an X.

Export Component Deletion Table

Component

K29 Unleaded

NF2 Leaded

EGR Assembly

--

X

TWC Converter

--

X

HO2S 2

X

X

O2S 1

--

X

Important: For Automatic Transmission DTC types, refer to Transmission.

DTC

Description

Domestic

Export Unleaded Fuel

Export Leaded Fuel

P0106

Manifold Absolute Pressure (MAP) System Performance

B

X

X

P0107

Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage

A

A

B

P0108

Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage

A

A

B

P0112

Intake Air Temperature (IAT) Sensor Circuit Low Voltage

A

A

B

P0113

Intake Air Temperature (IAT) Sensor Circuit High Voltage

A

A

B

P0117

Engine Coolant Temperature (ECT) Sensor Low Voltage

A

A

B

P0118

Engine Coolant Temperature (ECT) Sensor High Voltage

A

A

B

P0121

Throttle Position (TP) Sensor Performance

B

X

X

P0122

Throttle Position (TP) Sensor Low Voltage

A

A

B

P0123

Throttle Position (TP) Sensor High Voltage

A

A

B

P0125

Engine Coolant Temperature (ECT) Excessive Time To Closed Loop

B

X

X

P0131

Oxygen Sensor (O2S) Circuit Low Voltage Sensor 1

A

A

X

P0132

Oxygen Sensor (O2S) Circuit High Voltage Sensor 1

A

A

X

P0133

Oxygen Sensor (O2S) Slow Response Sensor 1

B

C

X

P0134

Oxygen Sensor (O2S) Circuit Insufficient Activity Sensor 1

A

A

X

P0137

Heated Oxygen Sensor (HO2S) Circuit Low Voltage Sensor 2

B

X

X

P0138

Heated Oxygen Sensor (HO2S) Circuit High Voltage Sensor 2

B

X

X

P0140

Heated Oxygen Sensor (HO2S) Circuit Insufficient Activity Sensor 2

B

X

X

P0141

Heated Oxygen Sensor (HO2S) Heater Circuit Sensor 2

B

X

X

P0171

Fuel Trim System Lean

B

C

X

P0172

Fuel Trim System Rich

B

C

X

P0200

Injector Control Circuit

A

A

C

P0300

Engine Misfire Detected

B

C

C

P0301

Cylinder 1 Misfire Detected

B

C

C

P0302

Cylinder 2 Misfire Detected

B

C

C

P0303

Cylinder 3 Misfire Detected

B

C

C

P0304

Cylinder 4 Misfire Detected

B

C

C

P0325

Knock Sensor (KS) Module Circuit

A

A

C

P0335

CKP Sensor Circuit

A

A

X

P0341

CMP Circuit Performance

A

A

X

P0342

CMP Sensor Circuit Low Voltage

A

A

X

P0401

EGR System

A

C

X

P0404

EGR Valve Open Pintle Position

B

B

X

P0405

EGR Valve Sensor Signal Low

B

B

X

P0420

TWC System Low Efficiency Bank 1

A

X

X

P0440

EVAP System

A

A

X

P0442

EVAP Control System Small Leak Detected

A

A

X

P0446

EVAP Canister Vent Blocked

A

A

X

P0452

Fuel Tank Pressure Sensor Circuit Low Voltage

A

A

X

P0453

Fuel Tank Pressure Sensor Circuit High Voltage

A

A

X

P0460

Fuel Level Sensor Circuit

C

C

X

P0480

FC Relay Control Circuit

A

B

B

P0502

VSS Circuit Low Input (MT)

A

A

B

P0506

Idle Control System Low RPM

B

B

X

P0507

Idle Control System High RPM

B

B

X

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 Memory

A

A

C

P0602

PCM Not Programmed

A

C

C

P0705

Transmission Range Switch Circuit (A/T)

C

C

X

P1133

Oxygen Sensor (O2S) Insufficient Switching Sensor 1

B

C

X

P1171

Fuel System Lean During Acceleration

C

C

X

P1336

CKP System Variation Not Learned

A

A

A

P1380

EBCM DTC Detected--Rough Road Data Unusable

C

C

C

P1381

Misfire Detected--No EBCM/PCM Serial Data

C

C

C

P1404

EGR Valve Closed Pintle Position

B

B

X

P1441

Evaporative Emissions (EVAP) System Flow During Non-Purge

A

A

X

P1621

PCM Memory Performance

A

A

A

P1629

Theft Deterrent Crank Signal Malfunction

C

C

C

U1016

Serial Communication Malfunction

C

C

C