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P0603 Diagnostic Trouble Code Discussion for July 2006

Control Module Long Term Memory Reset

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Trouble Ticket Help Requests for DTC P0603
Help Request Posted
1997 Ford F-350 XL 7.3L No Start VIN: 1FTJW36F0V
P0603: PCM Keep Alive Memory Test Error. Customer states that vehicle ran normally when he parked it on Friday. Called Monday morning after no start. Cranks great. He says he had a chip (DLC loaded program) in the PCM. He says he unloaded the chip and put it back to Ford OE program. We pulled codes l...
July 12, 2006
1998 Oldsmobile Aurora 4.0L No Start, irratic systems VIN: 1G3GR62CXW
P0603: control module longterm memory reset. Tach jumps around all the time. Speedometer will start to jump and eventually will peg at 160mph while driving 40mph. when this happens, the a/c cuts out, the rest of the dash gauges go to their rest position, traction control light comes on, and a few other o...
July 15, 2006
1999 Ford F-250 Super Duty Lariat 7.3L No Start VIN: 1FTNX21F8X
P0603: PCM Keep Alive Memory Test Error. I checked everything and could not find a reason for no start, it wont even start on wd40 Checked glow plugs and fuel pressure, o.k. still no start. Tested cam sensor and got no signal, replaced and still no start but now we have cam signal.Any Ideas???
July 17, 2006