XC chassis / 300 ISB Cummins Check Eng light??
Hey gang, Check ENG light stays on after turning key on. Fluids are all good & don't see anything out of place. What all is the system checking for upon key on? Thanks,
Forum Discussion
gsf35099 wrote:gatorcq wrote:
you have a 05. That coach should have a MMDC display. The MMDC has a diagnostics mode.
That must be the small panel next to my camera screen. I have played with it before and the diagnostic mode requires a code that I have not found yet. I do have all the original manuals and paperwork.
I did find out there is a big rig diesel shop 7 miles from my place and they will read the codes tomorrow.
Hopefully something simple & maybe they can show me how to read the MMDC display.
Thanks.
When my light came on, i called Freightliner, gave my Vin # and they gave me my 4 digit passcode. I was then able to read the code. Searched Internet on the code, replaced low presuure fuel regulator on C7 CAT. Fixed the problem.
