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P1640 Diagnostic Trouble Code Discussion for August 2006

Output Driver 1 Voltage High Input

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Trouble Ticket Help Requests for DTC P1640
Help Request Posted
1994 Chevrolet Lumina Z34 3.4L MIL Lamp on VIN: 2G1WP14X2R
P1640: Quad Driver Fault intermittent. This car brought to me from another shop that could not fix. Customer is complaining of intermittent SES light. My test drive will produce the light fairly consistantly on light acceration @ 20-25MPH. I performed the usual testing steps for a Quad Driver error...
August 24, 2006
1995 Pontiac Bonneville SE 3.8L MIL Lamp on VIN: 1G2HX52K0S
P1640: qdm1 driver fault. Greetings toall this pontiac sets quad driver codes.I followed the flow charts pertaing to each code and I came up with no diagnosis,and after clearing the check engine light the light comes on after a few seconds and stays on.The problem is there but I cant s...
August 25, 2006