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.
Need Cummins fault code help
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by HawkeyeAmbo, Sep 7, 2023.