Join Now
International Automotive Technicians Network

P1688 Diagnostic Trouble Code Discussion for December 2004

Unmanaged Engine Torque Signal Delivered To TCM


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 P1688
Help Request Posted
1999 Dodge Ram 2500 Truck 5.9L No Start VIN: 3B7KF2368X
P1688: Fuel Injection Pump Internal Malfunction. ... customer 5500.00 to repair. truck just quit going down road,no warning. if truck sets overnite will start and run for 2-3 minutes and then cut off and no restart. has code p1688 but no one has any info on this code.hate to replace pump assembly unless i ha...
December 10, 2004
1999 Dodge Ram 2500 Truck 5.9L No Start VIN: 3B7KF2368X
P1688: Fuel Injection Pump Internal Malfunction. ... customer 5500.00 to repair. truck just quit going down road,no warning. if truck sets overnite will start and run for 2-3 minutes and then cut off and no restart. has code p1688 but no one has any info on this code.hate to replace pump assembly unless i ha...
December 10, 2004