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P1503 Diagnostic Trouble Code Discussion for April 2014

Cruise Control Switch Circuit Malfunction


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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