Reoccurring DEF problem - Freightliner 2013 DD15

Discussion in 'Freightliner Forum' started by Mike A, Mar 21, 2019.

  1. maujpuria1860

    maujpuria1860 Bobtail Member

    4
    0
    Jul 31, 2020
    0
    Hi there. i drive 2013 cascadia dd15. recently i had check engine light on which turns into solid light after sometime. goes and comes back after few days. took truck to detroit diesel dealership and this was the diagnose" TRUCK AS CODE 4364/18 SCR NOX CONVERSION LOW. TROUBLESHOOT LEADS TO DEF BLADDER NOT HOLDING AIR, SCHREADER VAVLE IS LEAKING, REPLACED BLADDER,AIR UP BLADDER AND CONTINUE TO TROUBLESHOOT. DOSER FLOW IS 125 ML BOTH NOX SENSORS PASS TEST SCR TEMP IS OUT OF SPEC TROUBLESHOOTING LEADS TO REPLACEMENT OF 1 BOX. MY QUESTION IS THAT REALLY I NEED A ONE BOX OR IS THERE SOMETHING ELSE DEALERSHIP MISSED. TRUCK IS RUNNING OK FOR NOW. DEALER ALSO MENTIONED THAT REGEN IS NOT REACHING OPTIMUM TEMPERATURE AND EFFICIENCY IS ONLY 25% RIGHT NOW .
     
  2. maujpuria1860

    maujpuria1860 Bobtail Member

    4
    0
    Jul 31, 2020
    0
    Hi there. i drive 2013 cascadia dd15. recently i had check engine light on which turns into solid light after sometime. goes and comes back after few days. took truck to detroit diesel dealership and this was the diagnose" TRUCK AS CODE 4364/18 SCR NOX CONVERSION LOW. TROUBLESHOOT LEADS TO DEF BLADDER NOT HOLDING AIR, SCHREADER VAVLE IS LEAKING, REPLACED BLADDER,AIR UP BLADDER AND CONTINUE TO TROUBLESHOOT. DOSER FLOW IS 125 ML BOTH NOX SENSORS PASS TEST SCR TEMP IS OUT OF SPEC TROUBLESHOOTING LEADS TO REPLACEMENT OF 1 BOX. MY QUESTION IS THAT REALLY I NEED A ONE BOX OR IS THERE SOMETHING ELSE DEALERSHIP MISSED. TRUCK IS RUNNING OK FOR NOW. DEALER ALSO MENTIONED THAT REGEN IS NOT REACHING OPTIMUM TEMPERATURE AND EFFICIENCY IS ONLY 25% RIGHT NOW
     
  3. uncleal13

    uncleal13 Road Train Member

    3,750
    6,171
    Apr 9, 2009
    Humboldt, Sk
    0
    Could be the DPF diesel doser is clogged up if temperatures aren't up to spec.
    Just had my One-Box replaced, I got the same codes. Fuel injectors were leaking.
     
    QUALITYTRUCK Thanks this.
  4. maujpuria1860

    maujpuria1860 Bobtail Member

    4
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    Jul 31, 2020
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    DID U GOT NEW ONE INSTALLED OR BOUGHT A USED ONE ? I AM GETTING A USED 2016 ONE BOX FOR 4000$ INSTALLED OR 15000$ FOR BRAND NEW FROM DEALERSHIP
     
  5. uncleal13

    uncleal13 Road Train Member

    3,750
    6,171
    Apr 9, 2009
    Humboldt, Sk
    0
    New, extended factory warranty covered it
     
  6. Tony2692

    Tony2692 Bobtail Member

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    Dec 4, 2020
    0
    Can I use a 2015 one box for my 2014 dd13 or does the one box have to be from the same truck year and engine?
     
  7. uncleal13

    uncleal13 Road Train Member

    3,750
    6,171
    Apr 9, 2009
    Humboldt, Sk
    0
    Probably be fine. As long as both are GHG14. EPA2010 models had air operated DEF pump. GHG14 have electric DEF pumps. GHG17 have different electronics I believe.
     
  8. spaliy555

    spaliy555 Bobtail Member

    3
    0
    Dec 9, 2020
    0
    By taking out outlet nox sensor to sniff some fresh air is it going affect after treatment system work differently? Like doser will deliver more def fluid to SCR? Or I just gonna get the fault code for sensor
     
  9. spaliy555

    spaliy555 Bobtail Member

    3
    0
    Dec 9, 2020
    0
    By taking out outlet nox sensor to sniff some fresh air is it going affect after treatment system work differently? Like doser will deliver more def fluid to SCR? Or I just gonna get the fault code for sensor
     
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