DD15. Doc face pluging

Discussion in 'Freightliner Forum' started by Vegas unlimited, Feb 18, 2020.

  1. Vegas unlimited

    Vegas unlimited Bobtail Member

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    What can cause doc face pluging? No fault codes. Doc face pluging happened about a month ago. We cleaned it by running the engine 5-6 hours Diagnosticlink connected. It was cleaned. Now again pluging happened. We have checked injectors, turbo, air filter. Everithing is ok. Any ideas?
     
  2. AModelCat

    AModelCat Road Train Member

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  3. Vegas unlimited

    Vegas unlimited Bobtail Member

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    No. Checked.
     
  4. Antinomian

    Antinomian Road Train Member

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    How many miles on the truck? I've heard that the catalyst can wear out, which would mean not enough oxygen being produced during regens. Seems like regens would start failing for lack of heat if that were the case though.
     
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  5. Antinomian

    Antinomian Road Train Member

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  6. wtokhi

    wtokhi Light Load Member

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    maybe a leaking doser/aftertreatment injector spraying diesel when it shouldn't be? have u noticed a slight increase in fuel consumption?
     
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  7. Vegas unlimited

    Vegas unlimited Bobtail Member

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    Its 1 year old one box
     
  8. Vegas unlimited

    Vegas unlimited Bobtail Member

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    I will check the doser tommorow..
     
  9. Leo2000

    Leo2000 Bobtail Member

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    Hi im new here .looking for some help. I have a 2017 cascadia dd15 , all 3 engine lights are on only tree codes (each one of them just indicate a particular lamp is on) no indication that a sensor is bad or else. The problem continue when you start regen the engine goes like there is a missed and the egr valve actuator keep going back and forth it takes like 5 minutes or more you feel the engine sound change(no more miss) but still high idle and you can feel there is no regen taken place. Any help?
     
  10. Vegas unlimited

    Vegas unlimited Bobtail Member

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    Leo sorry i dont know what is the problem with your engine.
     
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