Def problems headache 2014 kw mx13 paccar

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by HDiesel, Feb 23, 2021.

  1. HDiesel

    HDiesel Bobtail Member

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    May 30, 2018
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    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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  3. mixingconcrete

    mixingconcrete Light Load Member

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    Apr 14, 2019
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    Do you have the codes that it is throwing?
     
  4. HDiesel

    HDiesel Bobtail Member

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    May 30, 2018
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    Sorry for the late reply, at the time it was p3834. Got it repaired since then
     
  5. Hakotrucking1905

    Hakotrucking1905 Bobtail Member

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    Jul 1, 2021
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