ISX - SCR Efficiency Low 4364

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Gregoryr6, May 6, 2020.

  1. Gregoryr6

    Gregoryr6 Bobtail Member

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    I have 2013 KW T660 with ISX 15 665K miles
    My check engine light is on for code 4364 - SCR
    Efficiency Low, I’ve replaced so many parts:
    DPF filter, inlet NOx sensor, outlet NOx sensor,
    DEF dozer, DEF filter, diesel dozer(7th injector),
    couple temp sensors and still getting
    Fault code 4364....can someone help?
     
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  3. Goodysnap

    Goodysnap Road Train Member

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  4. Gregoryr6

    Gregoryr6 Bobtail Member

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  5. Goodysnap

    Goodysnap Road Train Member

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    Engine serial number please
     
  6. Gregoryr6

    Gregoryr6 Bobtail Member

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  7. Goodysnap

    Goodysnap Road Train Member

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    Your fault code listed does not exist under an ISX15 or under the ESN given.

    What tool are you reading with or do you have a different fault code?
     
  8. Gregoryr6

    Gregoryr6 Bobtail Member

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  9. Gregoryr6

    Gregoryr6 Bobtail Member

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  10. Gregoryr6

    Gregoryr6 Bobtail Member

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    4364 and 3582 is the same code
     
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