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P1640 Diagnostic Trouble Code Discussion for June 2011

Output Driver 1 Voltage High Input

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Trouble Ticket Help Requests for DTC P1640
Help Request Posted
1995 Oldsmobile Cutlass Ciera 3.1L Hesitation, Misfire, MIL Lamp on VIN: 1G3AJ53M3S
P1640: qdm a error. greetings all. this thing has me pulling my hair out. Replaced the lower intake gasket due to an oil leak at the rear. I now have a hesitation and backfire under hard acceleration that the customer says was not there before. check engine light comes on intermi...
June 14, 2011