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2016 Paccar MX 13 - Can’t clear code after EGR Replacement

Discussion in 'Peterbilt Forum' started by cobra390hp1, Oct 10, 2022.

  1. Oct 10, 2022 #1
    cobra390hp1

    cobra390hp1 Bobtail Member

    1
    0
    Oct 10, 2022
    0
    Hi,

    The codes I have are below.
    CECU Not Customized to Vehicle
    SPN
    1787
    2791
    3480
    3821
    I replaced the EGR Value. Im trying to use my OTR performance Diagnostic tool/software, to clear the EGR Codes. Am I missing something.
     
    cobra390hp1, Oct 10, 2022
    cobra390hp1, Oct 10, 2022
    #1
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  3. Oct 10, 2022 #2
    Arctic_fox

    Arctic_fox Experienced mx13 execrator

    4,417
    24,300
    Sep 16, 2016
    0
    Yup need paccar to actully program it with a davie4. The EGR is an emissions thing and pretty heavily locked down in the computer. Im having mine done now and my software cant do diddly with it.
     
    Arctic_fox, Oct 10, 2022
    Arctic_fox, Oct 10, 2022
    #2
  4. Sep 26, 2025 #3
    Meonthenet

    Meonthenet Bobtail Member

    27
    36
    May 9, 2019
    0
    Hello!
    Was that your problem? I'm having the same codes. I'm on a budget com'mon! Thank you!
     
    Meonthenet, Sep 26, 2025
    Meonthenet, Sep 26, 2025
    #3
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