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P0839 Diagnostic Trouble Code Discussion for December 2007

4WD MUX Switch Circuit High

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Trouble Ticket Help Requests for DTC P0839
Help Request Posted
2003 Dodge Ram 3500 5.9L Stall VIN: 3D7MU48C63
P0839: 4wd switch to high. This Dodge diesel will run OK until it warms up then it will die. After it sits a few minutes it will start and run about [...] and die out like it runs out of fuel. It will continue to do this and the longer it sets the longer it will run. But I think it is g...
December 10, 2007