Emission Derate with wrench

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by boblynn, Feb 3, 2024.

  1. Feb 3, 2024 #1
    boblynn

    boblynn Bobtail Member

    29
    2
    Mar 6, 2008
    Knoxville,Tn
    0
    We replaced a blown fuse and thought that was the issue, Will drive for 2-3 hrs after clearing light, then comes back on. Does not derate the engine, when the light comes on, jake brakes are little to none on high. Will not slow it down even being empty. Still regens and uses DEF, Trying to see if anyone has run across this. 2019 Peterbilt 389 with x15 performance
     
    boblynn, Feb 3, 2024
    boblynn, Feb 3, 2024
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Feb 3, 2024 #2
    North Pole Nightmare

    North Pole Nightmare Road Train Member

    1,013
    2,086
    Dec 15, 2021
    0
    Might need a parked regen hooked up to a computer to clear it,that can find a bad sensor or something.
     
    North Pole Nightmare, Feb 3, 2024
    North Pole Nightmare, Feb 3, 2024
    #2
  4. Feb 3, 2024 #4
    boblynn

    boblynn Bobtail Member

    29
    2
    Mar 6, 2008
    Knoxville,Tn
    0
    Done the computer regen, no luck
     
    boblynn, Feb 3, 2024
    boblynn, Feb 3, 2024
    #4
  5. Feb 3, 2024 #4
    North Pole Nightmare

    North Pole Nightmare Road Train Member

    1,013
    2,086
    Dec 15, 2021
    0
    I had a Freightliner, 126.Had the check engine with wrench on.They hooked it up and had to run it 2 times to clean it.
    Other than that fill it with new DEF and run it.
     
    North Pole Nightmare, Feb 3, 2024
    North Pole Nightmare, Feb 3, 2024
    #4
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.