what is code 56

Discussion in 'Trucks [ Eighteen Wheelers ]' started by HeavyPete, Jun 13, 2010.

  1. HeavyPete

    HeavyPete Bobtail Member

    33
    8
    May 24, 2010
    Kiowa, KS
    0
    Trying to figure out what code 56 is on my truck and how to fix it? 05 pete with 625 cat. Thanks for any help
     
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  3. country29

    country29 Medium Load Member

    518
    157
    Feb 27, 2010
    Arkansas
    0
    56, 253-02, Check Customer or System Parameters, this was from another post here that was in a google search. I dont remember what this is but here ya go. clear as mud!
     
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  4. Chris M.

    Chris M. Light Load Member

    123
    87
    May 27, 2010
    Tater State
    0
    Google it. Lots of codes on line. I did it to my dads 2000 W900l, just google peterbilt code 54 and see what happens. I found mine in 5 min. And if its something stupid like start up parameter check fail or something like that reset the computer by disconnecting the battery for 5-10min or if it has a reset button do that.
     
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