Engine derate in 3 hrs, seek service immediately!

Discussion in 'Kenworth Forum' started by kestrel1, Aug 26, 2020.

  1. kestrel1

    kestrel1 Bobtail Member

    28
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    Jan 1, 2009
    Sacramento, CA
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    I have a 2016 KW T880 with 93k miles on ISX15 450hp
    I just got this message yesterday and it’s got me all panicked. I’m new to all this new emission system BS, but thanks to CA I had to get rid of my older, perfect running trucks, and put myself in debt on a newer one! I run local dirt, just a ten wheeler, not even any freeway driving. So I know it’s probably not great for dpf but I do a forced regen every couple of weeks. The message came on and stayed on for a little while. Then went off. I parked up for day and ran today but no message. I’m still very nervous. Any tips, ideas? also, someone said I might need my dpf baked. Even at 93k miles???
    Any help appreciated
     

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  3. TheLoadOut

    TheLoadOut Medium Load Member

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    1,447
    Nov 6, 2019
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    Best to get it to a shop ASAP to beat a tow bill. Would be nice if someone knew how to remove the derate from the ECM without deleting the entire system.
     
    Vampire and bzinger Thank this.
  4. kestrel1

    kestrel1 Bobtail Member

    28
    5
    Jan 1, 2009
    Sacramento, CA
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    But it ran today with no message, no check engine light. Could it be possible that a sensor just picked up an odd reading and threw that sign, then corrected itself?i guess that is what I’m hoping
     
    bzinger Thanks this.
  5. bzinger

    bzinger Road Train Member

    11,406
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    Dec 10, 2014
    omaha , ne
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    It will be back ...trust me !
     
    Vampire Thanks this.
  6. Ironmyke

    Ironmyke Bobtail Member

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    Jun 18, 2017
    Kansas
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    Have them pull the codes and see what it says. If no codes , you’re good. Just a phantom code. Welcome to clean air act at our expense.
     
    olddog_newtricks Thanks this.
  7. kestrel1

    kestrel1 Bobtail Member

    28
    5
    Jan 1, 2009
    Sacramento, CA
    0
    The mobile mechanic I use can only get to me Friday so I’ll try run again today and hope nothing springs up. I’ll see if there’s any logged codes and go from there.
     
    Last edited by a moderator: Sep 23, 2020
  8. kestrel1

    kestrel1 Bobtail Member

    28
    5
    Jan 1, 2009
    Sacramento, CA
    0
    This is what codes came up, and a log of parameters, anybody familiar with these?
     

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    Last edited by a moderator: Sep 23, 2020
  9. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,451
    1,236
    Jun 14, 2009
    romulus,mi
    0
    Replace (1) intake nox sensor (2) DPF differential pressure sensor (3) stop running your DEF tank so low.
     
  10. kestrel1

    kestrel1 Bobtail Member

    28
    5
    Jan 1, 2009
    Sacramento, CA
    0
    Thanks, I’ll dontyat
     
  11. kestrel1

    kestrel1 Bobtail Member

    28
    5
    Jan 1, 2009
    Sacramento, CA
    0
    Replaced the sensor, checked the dpf pipes for soot accumulation which was none. Ran the truck today with a few loads and same derate message just came on and now CEL illuminated. This is killing me.
     
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