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P1688 Diagnostic Trouble Code Discussion for January 2005

Unmanaged Engine Torque Signal Delivered To TCM

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Trouble Ticket Help Requests for DTC P1688
Help Request Posted
1999 Dodge Ram 3500 5.9L No Start, Barely idles VIN: 1B7MF3362X
P1688: See Service Manuel. ... with a 5.9 diesel was running fine with no signs of a problem. Then it just shut down like someone turned off the key. It would not start afterwards. After it set for about an hour it would start but will only idle and very rough. You can move the throttle...
January 02, 2005