Two New codes I’ve never seen before

[Chamberpains]

I dont know what the damper would have to do with electrical problems unless it's about to come apart and the alternator isn't charging correctly (ultra rare)

If your having electrical issues then you need to be chasing down grounds and connections all over the truck. Start by changing every single fuse, relay and breaker that is in the entire truck. Pull apart and clean every ground and positive connection on the entire truck. Spray all connections with a liberal coating of heavy duty marine grade electrical protectant spray. Then go to the firewall and disconnect and thoroughly inspect and clean every single firewall connector. This I'd a tremendous help to keeping the gremlins out of the electrical system. Especially if you truck lives in wet, cold and filthy areas.

And do not pressure wash any of these connections. EVER. Once you force water and grime past the weatherpacking you'll always have water and grime getting into the connection.