I have 2 codes coming up p1610 and p1603 i replaced my negative battery cable.
SOURCE: P1603 Battery Backup Error
There is a power supply to the ecu that is missing either permanantly or interrmitently, it may be as simple as a fuse, or it may have a bad connection in a loom plug or a broken wire...
SOURCE: how to fix code p1610 on 2002 mitsubishi montera sport
P1610 - SBDS Interactive Codes Possible defective PCM.
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