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P1640 Diagnostic Trouble Code Discussion for October 2005

Output Driver 1 Voltage High Input


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Trouble Ticket Help Requests for DTC P1640
Help Request Posted
1994 Buick Park Avenue Ultra 3.8L Poor Fuel Economy, MIL Lamp on VIN: 1G4CU5216R
P1640: qdm 1. ... your a true buick tech. than you know this car is a half breed of obd1 and II. the QDM 1 controles the tcc lock up, the purge, and the boost circuit. the ses light has come on at 10 mph code and hot. come on at 40+mph. What im thinking is the rough idle co...
October 24, 2005
1994 Buick Park Avenue Ultra 3.8L Poor Fuel Economy, MIL Lamp on VIN: 1G4CU5216R
P1640: qdm 1. ... your a true buick tech. than you know this car is a half breed of obd1 and II. the QDM 1 controles the tcc lock up, the purge, and the boost circuit. the ses light has come on at 10 mph code and hot. come on at 40+mph. What im thinking is the rough idle co...
October 24, 2005