Need Cummins fault code help

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by HawkeyeAmbo, Sep 7, 2023.

  1. HawkeyeAmbo

    HawkeyeAmbo Bobtail Member

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    Sep 7, 2023
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    I've got a 1999 Freightliner FL50 Ambulance with a Cummins 5.9. Everything seems to run fine but it has a serious lack of power going uphill. Check engine light is on so I figured I would check that 1st. The scan tool reads:
    FMI=12 Bad intelligent device or component
    SID 233 Controller #2
    Anyone got a translation for that?
    Thanks in advance.
     
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  3. BoxCarKidd

    BoxCarKidd Road Train Member

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    Aug 26, 2014
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    I use google a lot.
     
  4. MRMTRANS

    MRMTRANS Medium Load Member

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    Apr 28, 2015
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    Pittsburg Power publishes diagnostic codes for Cummins on their website. They are an authorized Cummins shop.
     

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