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P0603 Diagnostic Trouble Code Discussion for May 2014

Control Module Long Term Memory Reset


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Trouble Ticket Help Requests for DTC P0603
Help Request Posted
2004 Ford F-250 Super Duty Lariat 6.0L Excessive Emissions, Misfire, MIL Lamp on VIN: 1FTNX21P34
P0603: PCM Keep Alive Memory Test Error. The truck has white smoke on acceleration. Misses heavily on #3 cylinder using cylinder balance test. All the other cylinders contribute. I disconnected the fuel injector on #3 still have white smoke. Disconnected the EGR valve still white smoke. Is the engine...
May 29, 2014