× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0603 Diagnostic Trouble Code Discussion for December 2008

Control Module Long Term Memory Reset

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0603
Help Request Posted
2000 Ford F-450 Super Duty Lariat 7.3L Cuts out, Stall VIN: 1FDXF46F1Y
P0603: PCM Keep Alive Memory Test Error. I have replaced the cmp with one from napa, one from ford, and a known good one (out of a company truck) I checked and rechecked the harness going into in for corrosion and loose connections. Pretty much have that ruled out. The truck was in about two weeks ag...
December 12, 2008