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P1640 Diagnostic Trouble Code Discussion for October 2009

Output Driver 1 Voltage High Input

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Trouble Ticket Help Requests for DTC P1640
Help Request Posted
1995 Oldsmobile Silhouette 3.8L Cuts out, Stall, MIL Lamp on VIN: 1GHDU06L2S
P1640: qdm 1 failure. Customer complaint of an engine stall sometimes. Brought to my shop where we spent about two weeks trying to get it to stall befor diving into the codes that were stored. Never got it to stall long enought to check anything so we tried to check out the codes. ...
October 26, 2009