Fault code

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by bthompkins81, Oct 23, 2019.

  1. bthompkins81

    bthompkins81 Bobtail Member

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    I have a 17 Freightliner Cascadia and just got a fault code spn 3223 fmi 7. Does anyone know what this is?
     
    bthompkins81, Oct 23, 2019
    #1
  2. Mike250rs

    Mike250rs Heavy Load Member

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    Raw Nox sensor
     

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    Mike250rs, Oct 23, 2019
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    MohawkMel and PE_T Thank this.
  3. PE_T

    PE_T Road Train Member

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    Images below.
     

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    PE_T, Oct 24, 2019
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  4. Detriotpowerdd13

    Detriotpowerdd13 Bobtail Member

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    Hey having same issue how did you fix it what was it thank you
     
    Detriotpowerdd13, Dec 20, 2019
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  5. Biloxicoast2010

    Biloxicoast2010 Bobtail Member

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    Figure your out?
     
    Biloxicoast2010, May 4, 2020
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  6. bthompkins81

    bthompkins81 Bobtail Member

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    Had to replace Inlet Nox sensor and then the outlet Nox sensor a week later
     
    bthompkins81, May 4, 2020
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    feldsforever and PE_T Thank this.