Edmunds Answers



  • zaken1 06/25/10 6:23 pm PST

    The ECM on 1996 and later OBD II cars cannot be reset by battery disconnect. That only works on OBD I systems, which were used through 1995. You have probably shut down the security system or other systems by trying to improperly reset the computer. As such, it will probably take a scan tool (which is what should have been used to reset the codes in the first place) to undo the mess. Whatever caused those codes to set will probably still be there; and will have to be identified and corrected before the trouble lights will work properly.


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