What is Fault Code 12? Peterbilt c-15 CAT

Discussion in 'Peterbilt Forum' started by rocknroll13, Dec 13, 2011.

  1. rocknroll13

    rocknroll13 Bobtail Member

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    Dec 13, 2011
    murrieta ca
    0
    2005 peterbilt c-15 cat...getting a fault code 12....wat is a fault code 12?
     
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  3. Sparkz

    Sparkz Light Load Member

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    Jul 10, 2011
    New Zealand
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    I think it is a fault with the coolant level sensor.
     
  4. dieseldawg

    dieseldawg Bobtail Member

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    Dec 12, 2011
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  5. Shade Tree

    Shade Tree Light Load Member

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    May 15, 2011
    Galloway Ohio
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    That is common with Pete's, usually from moisture. You can get the coolant level set at default in the ECM, but unhook the sensor and just monitor the level yourself.
     
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