C15 MBN flash code question

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

  1. 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
     
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  3. 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.
     
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  4. 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
     
  5. Padwalz

    Padwalz Bobtail Member

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    Here is the video of the flash codes
     
  6. 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?
     
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  7. Padwalz

    Padwalz Bobtail Member

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    It's a modified 7cz file
     
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  8. 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?
     
  9. 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
     
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  10. 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.
     
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  11. 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.
     
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