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P1603 Diagnostic Trouble Code Discussion for January 2010

PCM Internal Shutdown Timer Rationality


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Trouble Ticket Help Requests for DTC P1603
Help Request Posted
2002 Mazda 626 LX 2.5L No Start VIN: 1YVGF22D72
P1603: Key ID (Code Word) Not Registered In PCM. Hey Guys, This 626 was purchased as a wreck at auction and when the guy couldn't get it running, it wound up here. No spark, no injector drive. When I clear the 2 codes, they reset as soon as the key is turned on. The theft light is off when the key is off, ...
January 11, 2010