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P1631 Diagnostic Trouble Code Discussion for May 2007

Theft Deterrent - Start Enable Signal Not Correct

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Trouble Ticket Help Requests for DTC P1631
Help Request Posted
2000 Pontiac Sunfire SE 2.2L No Start, Cuts out, MIL Lamp on VIN: 1G2JB524XY
P1631: Theft Deterrent Fuel Enable Signal Not Correct. ... the shop previously with a cutting out problem and will no start in cold weather problem. retrieved trouble codes and traced them to a pcm problem. i replaced computer. a couple of weeks later the customer came back in telling me that he was having the sam...
May 17, 2007
1998 Cadillac DeVille 4.6L No Start VIN: 1G6KD54Y9W
P1631: Theft Deterrent System - Start Enable Signal Not Current. greetings to all,car was towed to me for a no start the owners states they disconnected battery for a long period of time and now it has a display saying theft system problem car may noy start.i did pull a code for theft system and i did try the relearn proced...
May 18, 2007
2000 GMC K3500 Sierra SLT 5.7L No Start, Cuts out VIN: 1GTHK34R7Y
P1631: Theft Deterrent - Start Enable Signal Not Correct. ... so I am hoping someone has seen this before and can give me a direction to go in. It has been towed in twice for starting and then shutting right back off, both times there was a P1631 stored. Both times it would start and run after it was unloaded from th...
May 23, 2007