Nox conversion low/def quality

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Pendulum, Mar 6, 2018.

  1. Cattleman84

    Cattleman84 Road Train Member

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    I had a very similar issue with a 2016 Volvo... But when it threw that poor quality Def code it also began a count down to derate me... I got pulled into a rest area about 2 miles down the road and did a parked regen... That fixed the code and derate issue... For the time being at least. And that particular regen took over 90 mins to complete!
     
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  3. mhyn

    mhyn Road Train Member

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    @Two wolfs what year is your truck ? as far as I know since 2011 def pumps don't have bladder.
     
    Last edited: Aug 13, 2018
  4. Two wolfs

    Two wolfs Bobtail Member

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    It’s a 2014 cascadia.
    I didn’t know about it either but that’s what they said was broken last time I went. New pump as well.
    And I did a parked regen as well every time I get the code and flashing def, but it would always come back.
     
    mhyn Thanks this.
  5. mhyn

    mhyn Road Train Member

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    BIG THANK YOU FOR THIS INFO !
    I have a truck with similar to yours 4364/18 issue. All tests are done and passed. I have big doubt that 1-box is toasted. I will check bladder pressure tomorrow.
     
    Pendulum Thanks this.
  6. Verdel

    Verdel Medium Load Member

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    Do you miss your Century now? :)
     
  7. mhyn

    mhyn Road Train Member

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    oh yes. Both my Centuries were good trucks. Real moneymakers.
     
  8. mhyn

    mhyn Road Train Member

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    Back to Low Nox BS. I just checked the bladder pressure and it was 0. When I saw that valve I said thank you Germans that you have used regular schrader valve here and not something fancy that would require special tool. I have put 46psi into bladder and now will test it. I will be back in 2-3 days with results.
     
    Two wolfs Thanks this.
  9. mhyn

    mhyn Road Train Member

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    What a beautiful place is this forum. Every day you learn something. Thanks that person who created this forum.
     
    SAR and Two wolfs Thank this.
  10. Goods carrier inc

    Goods carrier inc Bobtail Member

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    ON 2012 CASCADIA IT TOOK AROUND 6 MONTHS TO BAD OUTLET SENSOR CODE POP ON DASH . MAY BE ITS NOT FAILING COMPLETELY OR WHEM IT FAIL IT SUSPECT ON UR DEF QUALITY FIRST ......EVERTHING STARTED WITH BAD QUALITY AND LOW COVERSION AND CHANGING PARTS .SOME SAYS I NEED ONE BOX I FLUSH MY TANK AND FILLED WITH BOX DEF FLUID AND MY BAD QULITY GONE BUT LOW CONVERSION STILL THERE AND I DRIVE 6 MONTHS WITH LOW CONVERSION CODE ONLY ...IN BETWEEN I TRIED 3 TIMES TO FILL BULK DEF FROM PUMPS AND BAD QUALITY POPS EVERTIME .THEN FLUSH BACK AND PUT BOX FLUID IN .
    AFTER DRIVIING 3 MONTHS ON BOX FLUID BAD OUTLET NOX SENSOR CODES POP UP AND I CHANGE .ALL IS GOOD AFTER THAT DRIVING SINCE 4 MONTHS...ON BULK DEF FLUID..
     
    Last edited: Feb 4, 2020
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