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Cummins isx spn 4794

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Carmar, Sep 20, 2017.

  1. Sep 20, 2017 #1
    Carmar

    Carmar Bobtail Member

    1
    0
    Sep 20, 2017
    0
    Hey guys, the following fault code keeps popping up spn 4794 fmi 31. Aftertreatment 1 SCR Catalyst System Missing Condition Exist. Can someone help me with this. I have already replaced the def injector, outer nox sensor and the wire harness. 2014 kenworth 250k miles
    Thanks
     
    Carmar, Sep 20, 2017
    Carmar, Sep 20, 2017
    #1
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  3. Sep 20, 2017 #2
    Heavyd

    Heavyd Road Train Member

    7,812
    6,265
    Feb 4, 2009
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    Run a SCR system test with Insite and see any other codes pop up, then perform a "reset all" with Insite to clear the code and light.
     
    Heavyd, Sep 20, 2017
    Heavyd, Sep 20, 2017
    #2
  4. Aug 19, 2020 #3
    Celina

    Celina Bobtail Member

    19
    8
    Feb 9, 2020
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    Did you resolve your issue ? What was it ?
     
    Celina, Aug 19, 2020
    Celina, Aug 19, 2020
    #3
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