KOEO & KOER SELF-TEST Codes
WARNING: This page is about a different car, the 1996 Mazda B4000, 1996 Mazda B3000, and 1996 Mazda B2300. 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. See DIAGNOSTIC TROUBLE CODE DEFINITION CHARTS to identify correct testing and repair procedures to perform.