Got a CEL with downgraded power on Saluda grade. Told AAA I had a fifth wheel. They sent a tow truck. Called AAA back and said nothing they could do. Tow truck driver said he knew someone with a truck and fifth wheel hitch and he would come get it and things worked out.
Drove truck home and found out CEL was because fuel filter "zeroed out". Don't know how that happened as I ususally keep a constant check on fuel and filter mileage.
Watching my camper going down the road the other way was a strange feeling but guy taking my camper was luckily an honest guy.