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P1689 Diagnostic Trouble Code Discussion for April 2011

Traction Control Delivered Torque Output Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1689
Help Request Posted
2000 Dodge Ram 2500 5.9L MIL Lamp on VIN: 3B7KF2364Y
P1689: No comunication between inj. Pump and pcm. 1. My question is what tells the pcm to turn the fuel supply pump on the inj pump or ecm. Because I'm loosing power to the supply pump intermitantly at start up. I cycle the key and once in a while the pump will not run for the 25 seconds like it should .2. Wh...
April 07, 2011
1999 Dodge Ram 2500 5.9L No Start VIN: 1B7KF2366X
P1689: no communication between pump and ecm. ... new unit, truck ran great for a few days and quit again, removed new pump and had it tested and it tested good on the bench, so reinstalled the pump and truck fires right up and would idle great in the yard. We wiggle tested the harness trying to make it q...
April 12, 2011