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P1641 Diagnostic Trouble Code Discussion for May 2007

MIL Control Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1641
Help Request Posted
2001 Hummer H1 6.5L No Start VIN: 137AZ83371
P1641: No valid info. The vehicle came in with a hot start problem that occurs intermittently. The codes listed below were in memory, but the MIL was not on. I have not been able to duplicate the problem so far, but another person in the shop had a hard time starting the vehicle wh...
May 15, 2007
2001 Hummer H1 6.5L No Start VIN: 137AZ83371
P1641: No valid info. The vehicle came in with a hot start problem that occurs intermittently. The codes listed below were in memory, but the MIL was not on. I have not been able to duplicate the problem so far, but another person in the shop had a hard time starting the vehicle wh...
May 15, 2007