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Reading Trouble Codes

Warm engine to normal operating temperature and turn ignition off. Ensure engine speed is below 4000 RPM while warming up engine. Connect digital code tester to vehicle. See Figure . Start engine and wait 3 minutes.

If a code is displayed, check for cause of fault using instructions outlined under DIAGNOSTIC PROCEDURE  . If there is more than one fault in system, the lowest numbered code will be displayed first. If ignition is turned off after a fault has occurred, the malfunction code will not be displayed by tester.

TROUBLE CODE IDENTIFICATION

Code Circuit Affected
1 Ignition Pulse
2 Airflow Meter
3 Coolant Thermo Sensor
4 Intake Air Temperature Sensor
5 Feedback System
6 Throttle Position Sensor
8 EGR Position Sensor (Turbo)
9 Atmospheric Pressure Sensor
21 Atmospheric Pressure Sensor (Turbo)