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2019 Paccar MX13

Discussion in 'Trucks [ Eighteen Wheelers ]' started by mxregret75, Jan 24, 2023.

  1. Jan 24, 2023 #1
    mxregret75

    mxregret75 Bobtail Member

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    Jan 24, 2023
    0
    Codes: SPN 629 Internal injector power generation malfunction FMI 5
    SPN 651, 652, 653 voltage low or short circuit to ground FMI 4

    Have checked harness under valve cover and all connections, seem to be fine.

    Anyone ever see this? All happened at once (codes and lost 1,2,3 cylinders)
     
    mxregret75, Jan 24, 2023
    mxregret75, Jan 24, 2023
    #1
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  3. Jan 24, 2023 #2
    Goodysnap

    Goodysnap Road Train Member

    3,502
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    Jul 12, 2017
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    Have you ohmed out injectors? Continuity to ground?

    If one is shorted it will pull down the ECM drivers per bank. Internal ECM drivers are shared 1-2-3 and 4-5-6.
     
    Goodysnap, Jan 24, 2023
    Goodysnap, Jan 24, 2023
    #2
    Accidental Trucker and QUALITYTRUCK Thank this.
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