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P0603 Diagnostic Trouble Code Discussion for February 2011

Control Module Long Term Memory Reset

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Trouble Ticket Help Requests for DTC P0603
Help Request Posted
2001 Ford E-450 Econoline Super Duty Custom 7.3L No Start, Cuts out VIN: 1FDWE45F71
P0603: PCM Keep Alive Memory Test Error. Came in for no start. Had to replace 1 battery and charge other. Engine cranks but won't start. Code 603 - cleared it, it did not return. Acts like 1 or 2 cylinders are trying to fire. Plugged block heater in and primed with starting fluid. Started and ran but...
February 03, 2011
2004 Ford F-450 Super Duty XL 6.0L Hesitation, Surge VIN: 1FDXF47P54
P0603: PCM Keep Alive Memory Test Error. Start Truck Idles Fine. Under aceleration vehicle hesitates, with no power and then bogs down. Clears out for 20 30 seconds then continues. Started and drove after replacing filters ran better but still hesitates. Any suggestions?
February 04, 2011