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2019 KW T680 Paccar

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by High Stepping, Sep 6, 2022.

  1. Sep 6, 2022 #1
    High Stepping

    High Stepping Light Load Member

    52
    25
    Oct 29, 2020
    Mississippi
    0
    My uncle has a 2019 Paccar MX-13 that always seems to trip the same trouble code. I can get the exact code, but it's something like a def heater line circuit fault. He replaced the def heater line and it still comes on. His next move is to look at the harness. Any other ideas on what to check? Lol...My solution was that he should've bought a gilder to start with.
     
    High Stepping, Sep 6, 2022
    High Stepping, Sep 6, 2022
    #1
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  3. Sep 6, 2022 #2
    Arctic_fox

    Arctic_fox Experienced mx13 execrator

    4,372
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    Sep 16, 2016
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    Likely the harness or computer probly both and a few sensors too. Those MX13 emissions systems are pure junk ask me how i know after throwing almost 100k at mine last year.
     
    Arctic_fox, Sep 6, 2022
    Arctic_fox, Sep 6, 2022
    #2
    High Stepping Thanks this.
  4. Sep 6, 2022 #3
    High Stepping

    High Stepping Light Load Member

    52
    25
    Oct 29, 2020
    Mississippi
    0
    That's exactly what I've heard from others. A mechanic buddy of mine is a lead at KW and says the same. He said they start being money pits once they start messing up with one thing emissions related.
     
    High Stepping, Sep 6, 2022
    High Stepping, Sep 6, 2022
    #3
  5. Sep 6, 2022 #4
    Arctic_fox

    Arctic_fox Experienced mx13 execrator

    4,372
    23,836
    Sep 16, 2016
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    Yup the only fix that doesnt involve junking the truck is illegal too
     
    Arctic_fox, Sep 6, 2022
    Arctic_fox, Sep 6, 2022
    #4
  7. Sep 7, 2022 #5
    Magoo1968

    Magoo1968 Road Train Member

    2,050
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    Mar 18, 2021
    St Malo mb
    0
    On a 2015 kw 680 I drove it kept giving a def code after numerous trips to the dealer nothing ever lasted as a fix.. A roadside repair by a real mechanic solved issue .. the factory had pinched harness by a cab mount he patched it up but advised replacing harness ..
     
    Magoo1968, Sep 7, 2022
    Magoo1968, Sep 7, 2022
    #5
    spsauerland Thanks this.
  8. Sep 7, 2022 #6
    Goodysnap

    Goodysnap Road Train Member

    3,748
    9,115
    Jul 12, 2017
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    Your best connection. Have your uncle take the unit to your KW buddy.
    The lead KW guy should be able locate the issue in short order.

    If you can provide a chassis number and a fault code is the only way further progress can be made.
     
    Goodysnap, Sep 7, 2022
    Goodysnap, Sep 7, 2022
    #6
    spsauerland Thanks this.
  9. Sep 7, 2022 #7
    spsauerland

    spsauerland Road Train Member

    4,296
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    May 31, 2010
    West Harrison, In
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    It's easier to complain and call it junk!
     
    spsauerland, Sep 7, 2022
    spsauerland, Sep 7, 2022
    #7
    Goodysnap Thanks this.
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