Need ideas on fixing NOX related codes

Discussion in 'Volvo Forum' started by kubasj05, Dec 31, 2019.

  1. kubasj05

    kubasj05 Light Load Member

    Apr 18, 2013
    Hello fellow truckers,
    This is my first thread here on Volvo forum. I've been mostly active in International trucks section.
    First off, Happy New Year and best of luck in this coming year.
    What I want to ask you a Volvo community, since this is my first time owning Volvo trucks is help navigating\finding solution with the recent issue with what I understand is related to NOX sensor however, I'm not familiar with D13 emission stuff (mostly Navistar and Cummins)
    My question comes down to this:
    4 engine faults
    P 221A00
    P 225F00
    P 22A100
    P 22FE00
    What's the first to check on in order to pinpoint the problem, I'm assuming it won't be as easy as replacing nox sensor.
    The bad, shop cleared codes and gave me a picture of diagnostic page (see attached)
    The good, I can gain access to Tech Tool software if needed.
    If you can help, your thoughts and ideas are welcome. Thanks in advance IMG_20191231_125628.jpg
  2. Newto Trucking

    Newto Trucking Medium Load Member

    Dec 26, 2013
    NE Illinois
    IMHO P22A1 is your main code that need to be addressed first. Nox Sensor Circuit shorted high. Probable cause: Wires between NOx module and NOx sensor OR NOx sensor internally. You need to replace SCR outlet sensor and reset learned data for new NOx sensor. So you will need Volvo ptt to do that. The other 3 codes for NOx are just correlated to this main one.
    86scotty Thanks this.
  3. kubasj05

    kubasj05 Light Load Member

    Apr 18, 2013
    Thanks for heads up, I honestly hoped for what you just said. I appreciate you taking the time to reply Newto Trucking
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