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P1688 Diagnostic Trouble Code Discussion for January 2006

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 VIN: 1B7MF336XX
P1688: internal inj pump failure. Let me start by saying I do not normally work on diesl engines at all,but this is a very good customer and next door neighbor. Customer said he was driving down the road and truck just died. He had pulled the line going into the filter and had no fuel there.We...
January 17, 2006