Engine Control System

DIAGNOSTIC CODE DESCRIPTIONS

Diagnostic Codes Part 1 Of 2:

Diagnostic Codes Part 2 Of 2:

Diagnostic Code Reference Index:

Code 12 See Ignition System Troubleshooting
Code 14 See Chart No. 9
Code 21 See Chart VF-Check Connector/O2sensor
Code 22 See Chart No. 7
Code 24 See Chart No. 6
Code 31 See Chart No. 4
Code 41 See Chart No. 3
Code 43 See Chart No. 8
Code 71 See Chart THG/EGR Sensor Test (California Only)

NOTE: for information regarding diagnostic procedures please refer to Non-Trouble Code Diagnostic Procedures.

Component Tests and General Diagnostics