I did call the Cummins repair center nearest my home in Charlotte, NC. They're only advise was to bring the coach to them. While that is an option, I hope it will be the last one.
Recent short trip in 1999 Monaco Windsor. After about 50 miles of trip the engine warning light came on. I never saw or felt any difference in the operation of the RV. Got to the campground about 200 miles later with no apparent problem. Checked everything I know to check and could fiind nothing. Drove home a week later and the light was on the entire time. Any ideas or advice would be appreciated.