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C15 MBN flash code question

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Padwalz, Jan 12, 2019.

Page 2 of 3
  1. Jan 12, 2019 #11
    Cam Roberts

    Cam Roberts Road Train Member

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    Yeah I didn’t really check but something is up. He is reading it wrong or has an ecm issue
     
    Cam Roberts, Jan 12, 2019
    Cam Roberts, Jan 12, 2019
    #11
    Muddydog79 Thanks this.
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  3. Jan 13, 2019 #12
    Padwalz

    Padwalz Bobtail Member

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    I'm definitely planning on replacing the sensor and ohm testing the wires for it.
    I cannot take it to the cat dealer because they will try to flash their factory file and I don't want to lose my current file so that's no go. But I'll have a local shop scan it on monday.
    And just for sake of entertainment I'll video tape the flashes so you guys can see it yourselves.
     
    Padwalz, Jan 13, 2019
    Padwalz, Jan 13, 2019
    #12
    Muddydog79 Thanks this.
  4. Jan 13, 2019 #13
    Padwalz

    Padwalz Bobtail Member

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    Yes my boost is around 26-28 psi
    I haul same loads in the same areas and the engine does not act differently
     
    Padwalz, Jan 13, 2019
    Padwalz, Jan 13, 2019
    #13
  5. Jan 13, 2019 #14
    Padwalz

    Padwalz Bobtail Member

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    Here is the video of the flash codes
     
    Padwalz, Jan 13, 2019
    Padwalz, Jan 13, 2019
    #14
  7. Jan 13, 2019 #15
    Muddydog79

    Muddydog79 Heavy Load Member

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    Definatley an 2-6 and an 8. Just a fyi, i had flash codes that would not show up on the computer when i had to replace the ecm. Computers do crazy things sometimes. Guess u got the 6nz file now?
     
    Muddydog79, Jan 13, 2019
    Muddydog79, Jan 13, 2019
    #15
    Padwalz Thanks this.
  8. Jan 13, 2019 #16
    Padwalz

    Padwalz Bobtail Member

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    It's a modified 7cz file
     
    Padwalz, Jan 13, 2019
    Padwalz, Jan 13, 2019
    #16
    Muddydog79 Thanks this.
  9. Jan 13, 2019 #17
    Padwalz

    Padwalz Bobtail Member

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    Does that mean I have to find a new ecm?.. That's some sh!tty pizza...
    Is Mr. Haney still around this forum?
     
    Padwalz, Jan 13, 2019
    Padwalz, Jan 13, 2019
    #17
  10. Jan 13, 2019 #18
    Cam Roberts

    Cam Roberts Road Train Member

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    I had a new ecm diagnosed and installed by cat last year. 2300 bucks total out the door. I brought it to cat becuase it wouldn’t stop flashing a check engine code saying “sensors not calibrated”. Internal battery or something took a dump
     
    Cam Roberts, Jan 13, 2019
    Cam Roberts, Jan 13, 2019
    #18
    Padwalz Thanks this.
  11. Jan 13, 2019 #19
    Muddydog79

    Muddydog79 Heavy Load Member

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    Personally i would fix the pressure sensor and wouldnt worry about the flash code 8 unless it starts acting crazy. Then check out fixing the ecm or replacing.
     
    Muddydog79, Jan 13, 2019
    Muddydog79, Jan 13, 2019
    #19
    Cam Roberts Thanks this.
  12. Jan 13, 2019 #20
    Padwalz

    Padwalz Bobtail Member

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    Yeah, I'm taking care of the sensor tomorrow and seeing what happens from there.
    If I need a new ecm I'll know what to expect.
     
    Padwalz, Jan 13, 2019
    Padwalz, Jan 13, 2019
    #20
    Oxbow and Muddydog79 Thank this.
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