× 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

P1503 Diagnostic Trouble Code Discussion for April 2014

Cruise Control Switch Circuit Malfunction

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 P1503
Help Request Posted
1999 Cadillac Catera 3.0L No Start VIN: W06VR52R6X
P1503: Theft Deterrent System Password Incorrect. The car came in as a no start. It is not getting injector pulse. CMP and CKP sensors are both operating. The security light is flashing until the key is turned on, then it goes out and stays out. Even though the light is out, I still have tried the key relearn...
April 21, 2014