DTC P0603: Notes

DTC P0603 (MZI-3.5) DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0603	PCM keep alive memory (KAM) error
DETECTION CONDITION	Indicates the PCM has experienced an internal memory concern. However, there are external items that can cause this DTC.
POSSIBLE CAUSE	Reprogramming Battery terminal corrosion Open circuit between battery positive terminal and PCM terminal 1BB Connector or terminal malfunction Loose battery connection
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