× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P1640 Diagnostic Trouble Code Discussion for August 2011

Output Driver 1 Voltage High Input

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

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