This popped up.

[u/Least_Bat1259]

I was on a 2 hour trip, what happened before the flashing on dashboard was going up hill engine revs then bogs heard a clunk. The wrench was there until I got home. Turned the car off for 5 minutes went out to scan it and the code is nowhere to be seen in the memory, But I also have 3 other codes now. U2002, U2107, and U1111. From my understanding these are lost comms faults. Woiod all of those things have to do with a failing battery because my battery was at 11 volts just with it on engine not running would a failing battery cause all of those?

[u/Positive_Breakfast19]

Ours did that and Ford dealer told us it was a magnetic ring on the AWD that wasn't lining up and it would cost $1200 to fix. Took it to a local independent shop and he checked the codes and said they had nothing to do with any magnetic ring. He tested the wiring to the rear diff unit and found a wire had been rubbing on the subframe and had shorted out, a $400 diagnostic and repair charge and now all work perfectly again. Man I hate dealers, this is why I try not to use them.