Freightliner DD13 after treatment

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by runningman0661, Mar 10, 2019.

  1. runningman0661

    runningman0661 Road Train Member

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    Been having issues on a 2015 cascadia with 475k the past three weeks with the after treatment system. I’ve been at the Detroit dealer in Omaha three times and had to be towed to the Freightliner dealer today in North Platte.

    The codes it’s thrown recently are spn-4357 fmi-4, spn-3510 fmi-4, and now spn-5246. The Detroit shop has replaced the doser valve, line heater, pressure sensor, and ECM. Any ideas?
     
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  3. Newto Trucking

    Newto Trucking Medium Load Member

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    Are those codes the same as before the dealer started working on your truck or were they able to fix some of the codes??
     
  4. Newto Trucking

    Newto Trucking Medium Load Member

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    Spn 3510 is your main problem, and it’s wiring problem with one or a couple cable that are broken or corroded.
     
  5. runningman0661

    runningman0661 Road Train Member

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    They fixed the first two codes, but spn-5246 is the latest.
     
  6. runningman0661

    runningman0661 Road Train Member

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    I think it’s an issue somewhere in the wiring harness, do you agree? Thanks for the insight.
     
  7. Newto Trucking

    Newto Trucking Medium Load Member

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    So this last visit to the dealer in North Platte because of only one code right, spn 5246?? What’s fmi at the end??
     
  8. runningman0661

    runningman0661 Road Train Member

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    It’s weird no Fmi at the end just showing spn-5246
     
  9. Newto Trucking

    Newto Trucking Medium Load Member

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    So currently just one code for spn 5246??
     
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  10. Working2party

    Working2party Medium Load Member

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    On many Freightliner dash read-outs it list the FMI # number as FAIL #. The FMI/FAIL will lean it toward a wiring issue, sensor reading high/low, etc
     
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