I have an Onan Marquis 7000 generator which will start from remote panel, but, will not shut down from there. It did before, but, the last time out it won't work. Have to go to Gen to shut down. Any thoughts?
The code read "P0131 Heated Oxygen Sensor Bank 1 Sensor 1"
Have 36,000 miles. Have not cleaned Mass Air Flow Sensor. Owned the coach since 2012. Had a Banks system installed in 2016.
I have 2003 Mountain Aire with GM8.1 Workhorse engine. The check engine light comes on and the coach goes into limp mode immediately. Scan shows heated oxygen sensor. Surprised that it goes into limp mode for sensor. Has anyone seen something similar? I can disconnect and reconnect battery and it will run fine for sometimes 40 miles or 200 miles before it happens again.