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P1640 Diagnostic Trouble Code Discussion for September 2008

Output Driver 1 Voltage High Input


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Trouble Ticket Help Requests for DTC P1640
Help Request Posted
1995 Oldsmobile Cutlass Supreme 3.4L Poor Idle Quality, Stall, MIL Lamp on VIN: 1G3WT32X2S
P1640: quad driver modual A malfuction. this 3.4 has a hunting idle which eventually will stall the engine, have checked extensively for vacume leaks with brake clean, checked egr, and also swapped it with a known good one, check tps and swapped with another. all numbers seem good an scan tool excep...
September 28, 2008
1995 Oldsmobile Cutlass Supreme 3.4L Poor Idle Quality, Stall, MIL Lamp on VIN: 1G3WT32X2S
P1640: quad driver modual A malfuction. this 3.4 has a hunting idle which eventually will stall the engine, have checked extensively for vacume leaks with brake clean, checked egr, and also swapped it with a known good one, check tps and swapped with another. all numbers seem good an scan tool excep...
September 28, 2008