Sys 25 1548 fml 5

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by cwaldo, Mar 23, 2018.

  1. cwaldo

    cwaldo Bobtail Member

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    Apr 24, 2017
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    I have 2012 cascadia and this code is on my dash without check engine or warning lights can someone help me find a answner
     
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  3. mhyn

    mhyn Road Train Member

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    Dec 29, 2008
    Northridge, CA
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    F###ck it. don't pay attention on it. Could be HVAC related error...
     
  4. Upperdecker313

    Upperdecker313 Bobtail Member

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    Oct 8, 2018
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    Mine just came on as well the same time I lost all air in the cab. Still getting air in the sleeper but now the fan level 8(max) is more like a level 4
     
  5. mhyn

    mhyn Road Train Member

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    Northridge, CA
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    SPN-1548 FMI 5 “HVAC DUCT TEMP”.
     
  6. Upperdecker313

    Upperdecker313 Bobtail Member

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    Oct 8, 2018
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    Mine is actually code sys 25 SPN 523318, which is the blower motor I believe. Says it could be a rotor not moving freely or something like that, or the blower is just ######. I will have them check everything out though. Thank you
     
  7. m2Tim

    m2Tim Bobtail Member

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    Feb 18, 2019
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    What was the resolve for this? This just popped up yesterday on me
     
  8. Team Brine

    Team Brine Bobtail Member

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    Mar 27, 2020
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    So I have the sys 50 son 1548 fail 05 code as well but my blower wont shut off please help
     
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