Fault codes question SPN:3482 & SPN:77

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Concorde, Aug 13, 2019.

  1. Concorde

    Concorde Road Train Member

    4,381
    15,665
    Jun 29, 2016
    West Melbourne Florida
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    Can someone tell me factually, if either of these codes will cause a derate?

    2014Paccar MX-13 500hp
    571k miles.

    Typically when I get a fault code it’s gone in a few days. These current codes seem to be here to stay.. Been active for about two weeks.

    I’ve had no noticed any difference in performance.. and this is my first issue with the truck since I got it 70k miles ago.

    Just curious if I got time on my hands so I can coordinate Shop time with home time.
     

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