Def problems headache 2014 kw mx13 paccar

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by HDiesel, Feb 23, 2021 at 6:31 PM.

  1. HDiesel

    HDiesel Bobtail Member

    5
    3
    May 30, 2018
    0
    I'm having alot of trouble with a def system at the moment. Regen wont go past 600F. Dosing valve doesnt seem to be engaging. Only faults that show 3, with one going back and forth. 2 faults are the egr shutoff and protection. And the last one alternates between fuel shutoff valve- data erratic and then next time around it will be DOC undetected. Hoping y'all can shoot me some ideas.
     
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