Nox Inlet sensor crapped out. Replace right away? Or risk it?

Discussion in 'Freightliner Forum' started by PermanentTourist, Nov 9, 2022.

  1. PermanentTourist

    PermanentTourist Heavy Load Member

    727
    847
    Nov 9, 2016
    48 states + Canada
    0
    SPN3216, SPN3223, blah blah blah, the sensor is gone.

    But I am running and not getting derated at all. I guess the outlet sensor is still picking up low enough emissions even without the inlet sensor doing whatever it's supposed to do. Is this a sustainable enough state of events to run for a few hundred miles?

    I want to at least buy the sensor from our local Freightliner so I don't have to eat the core charge. Or better yet... they have this one on Amazon for $179...

    Inlet NOx Sensor Replacement for Freightliner DD-15 0101532228. Manufacturer Part Number 0101532228, A0101532228, DDE EA 0101532228 Compatible with Freightliner Cascadia 2012-2022 Engine DD-13 DD-15 https://a.co/d/iupr9PG

    I'm kind of tempted honestly, cuz the reman Freightliner one is like $350 + $100 core
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  3. armo

    armo Light Load Member

    274
    287
    Jun 16, 2022
    0
    Do not buy Nox sensors online. Ebay is full of Chinese junk nox sensors. many of them have packaging like original sensors. Go to dealer and buy new or reman sensor. it will work correctly.
    When nox inlet sensor goes bad usually there is no derate. Also if you have ghg17 engine try to remove and clean sensor probe. sometime it start working again correctly.
     
    PermanentTourist Thanks this.
  4. PermanentTourist

    PermanentTourist Heavy Load Member

    727
    847
    Nov 9, 2016
    48 states + Canada
    0
    Yeah, I've already talked myself out of the Amazon sensor, too. If the Freightliner one was $1000, it would be worth a risk - but it's only like $350, nbd.

    And yeah, no derate is good. But i have noticed that the truck is getting bad mileage and has just gotten vaguely stinky. Kinda worried that i'm doing damage to other stuff by running it with no inlet sensor, especially to the dpf filters n stuff...
     
  5. armo

    armo Light Load Member

    274
    287
    Jun 16, 2022
    0
    i don't think bad nox sensor would damage engine. bad fuel mileage and stinky exhaust could happen. i would replace that sensor asap. if you engine is ghg17 its about15 min job.
     
    PermanentTourist Thanks this.
  6. PermanentTourist

    PermanentTourist Heavy Load Member

    727
    847
    Nov 9, 2016
    48 states + Canada
    0
    Yeah, the hardest part is actually just taking off the passenger steps - i need to stop by a harbor freight and get a torx wrench socket set, the bolts are too strong for torx screwdriver. The rest looks super easy. Might just do that later today on the road, instead of running all the way home on bad sensor.
     
  7. armo

    armo Light Load Member

    274
    287
    Jun 16, 2022
    0
    what year is your truck ?
     
  8. PermanentTourist

    PermanentTourist Heavy Load Member

    727
    847
    Nov 9, 2016
    48 states + Canada
    0
    2016. I already climbed under to see if I can get at the sensor without taking off the steps - nah, they gotta come off.
     
  9. armo

    armo Light Load Member

    274
    287
    Jun 16, 2022
    0
    ok. your sensor is located on top of 1 box after dpfs. sometimes its hard to take it off. you will need 7/8 oxygen socket to remove it.
     
  10. PermanentTourist

    PermanentTourist Heavy Load Member

    727
    847
    Nov 9, 2016
    48 states + Canada
    0
    Yup, i've got that. I've removed an outlet one before, without removing the steps!
    It was a nightmare! But I was stuck on 5mph derate with no way to take off the steps and had no choice.

    This time I can actually get the right tools and take off the steps and do it ina civilized manner.
     
    armo Thanks this.
  11. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,718
    1,646
    Jun 14, 2009
    romulus,mi
    0
    T40 Torx socket. 8 step bolts. 5 minutes for steps. Inlet easier than outlet.
     
    RocketyMan, armo and PermanentTourist Thank this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

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

  • Draft saved Draft deleted