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P1631 Diagnostic Trouble Code Discussion for October 2004

Theft Deterrent - Start Enable Signal Not Correct

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Trouble Ticket Help Requests for DTC P1631
Help Request Posted
1999 Oldsmobile Alero GL 2.4L No Start, MIL Lamp on VIN: 1G3NL52T2X
P1631: Theft Deterrent Enable Signal Not Correct. Many codes found in the computer one problem is that we have to sublet out to communicate with the BCM our scanner doesn't have the capabilities. When we sent it out told that there was a bunch of codes but the car started. The biggest problem is the theft det...
October 06, 2004
1997 Cadillac DeVille 4.6L No Start, MIL Lamp on VIN: 1GC6KD54Y4
P1631: Theft Deterrent System - Start Enable Signal Not Current. ... reported dead battery.After trying to start car I realized I had more problems than a dead battery.I checked for spark&injector pulse.Good spark but no injector pulse.Then I checked for codes.Codes 1631 and b2750 came up.After checking with a Cadillac ...
October 17, 2004