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P0603 Diagnostic Trouble Code Discussion for June 2004

Control Module Long Term Memory Reset

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Trouble Ticket Help Requests for DTC P0603
Help Request Posted
2002 Ford Econoline E350 Super Duty 7.3L Poor Fuel Economy
This Ford Box truck was purchased new with 400 miles on itin the fall of 2003. Since putting it in service and driving all over the state of Oh. and Pa. we think we are getting below avg. fuel mileage. The truck has always run well. Trying to get a little bett...
June 02, 2004
1997 Ford F Super Duty 7.3L Poor Idle Quality, Hesitation, Surge, Cuts out, Misfire VIN: 1FDLF47F5V
P0603: PCM Keep Alive Memory Test Error. truck was running fine, customer turned engine off, let set for about 5 minutes, went to start hard to start, when finally starter sounds just like rod knocking, no power, hard to start.
June 08, 2004