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P0603 Diagnostic Trouble Code Discussion for September 2004

Control Module Long Term Memory Reset

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Trouble Ticket Help Requests for DTC P0603
Help Request Posted
2001 Ford F-250 Super Duty Lariat 7.3L Sets PO603 No MIL VIN: 1FTNW21F41
P0603: PCM Keep Alive Memory Test Error. This truck was a no start, One of the batteries was shorted (6 volts at 200 amps). Had the following codes in memory, P1249, PO232, PO603, P1211, PO604. Replaced battery and PO603 Internal KAM Error would reset with a no start. All powers and grounds are OK. P...
September 08, 2004