Check Engine Light Leads to Stop Engine Light

I had a similar experience with my MH on a trip. We had been driving for hours. It's a 300 Cummins, turned it was low on coolant. The plastic tank looked full I talked to the Cummins hotline guy and at the time he said go ahead and drive it. Oil level was good, trans level good, temp was normal, no loss of power and the coolant level looked good. I drove it on his recommendation. When I got it into the Cummins shop they added about a quart of coolant and called it good. They said the sensor is set so high that a little loss of coolant will set off an alarm. Cost me $150 for that tidbit. Worth a try.