Egr delta pressure and dpr air actuator

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Heavy runner, Nov 8, 2017.

  1. Nov 8, 2017 #1
    Heavy runner

    Heavy runner Bobtail Member

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    Nov 8, 2017
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    I have a 2012 kw 660 with a mx13. I got in the truck after the weekend and now I have egr delta pressure ans dpf air actuator codes with an engine derate. These didn't pop up at all before I shut down. I'm lost on the cause and really don't want to take it in again for them to say it'll be awhile. I'd appreciate any help.
     
    Heavy runner, Nov 8, 2017
    Heavy runner, Nov 8, 2017
    #1
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  3. Nov 9, 2017 #2
    Shaggy76

    Shaggy76 Heavy Load Member

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    Feb 22, 2012
    Orlando, FL
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    What codes?

    Have you been idling a lot?
     
    Shaggy76, Nov 9, 2017
    Shaggy76, Nov 9, 2017
    #2
  4. Nov 9, 2017 #3
    Goodysnap

    Goodysnap Road Train Member

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    Jul 12, 2017
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    Your EGR delta warning is from EGR derate and is always progressive from another code that is also set active after a preset length of time. My best guess on the other description is something to do with the exhaust backpressure valve. The yoke can freeze up on the actuator shaft and or it may need recalibrated.
     
    Goodysnap, Nov 9, 2017
    Goodysnap, Nov 9, 2017
    #3
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