Thor Forums

[Lt Keefer]

I would clear the code and drive home. If the money light comes back on, swap the coil for the affected cylinder with another cylinder and clear the code. If the light comes back with the same cylinder, change the plug. If it moves to the other cylinder, change the coil. If the money light comes back after all that, you will need further diagnostics from a qualified auto tech. I doubt it is the gas cap. On my last trip, I somehow forgot to put the gas cap on at a fuel stop. Senior moment, I guess. Anyway, when I stopped for the night and went to hook up the electric, I noticed it off. During the drive, the coach ran fine and had no lights on the dash.