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P1640 Diagnostic Trouble Code Discussion for August 2011

Output Driver 1 Voltage High Input


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Trouble Ticket Help Requests for DTC P1640
Help Request Posted
1999 Saab 9-5 2.3L No Start VIN: YSE3F48E1X
P1640: No voltage at main relay pin 1. ... injection pulse, no spark and blows the 30 amp ignition fuse as soon as you turn on the key. Disconnect DIS module and fuse stays OK. I can trigger the injection pulse with my X-431 launch, cannot trigger any spark of course. Plugs look ok and not flooded....
August 17, 2011
1999 Saab 9-5 2.3L No Start VIN: YSE3F48E1X
P1640: No voltage at main relay pin 1. ... injection pulse, no spark and blows the 30 amp ignition fuse as soon as you turn on the key. Disconnect DIS module and fuse stays OK. I can trigger the injection pulse with my X-431 launch, cannot trigger any spark of course. Plugs look ok and not flooded....
August 17, 2011