KOEO & KOER SELF-TEST Codes

WARNING: This page is about a different car, the 1996 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

Record codes in order received. These codes indicate current faults in system and should be serviced in order of appearance. Use DIAGNOSTIC TROUBLE CODE (DTC) REFERENCE CHART to identify correct CIRCUIT TEST to perform.

NOTE: If self-test will not activate or TOOL COMMUNICATION ERROR is received, go to CIRCUIT TEST QA, step 1).