Hi all...long time member now retired so hope to get more involved. I need your help...briefly...rear tire blew out and as well as ruining the bed side panel and wheel well stuff etc the tire ripped out my Diesel and def filler pipes.

It took 5 months to source replacement filler tubes via insurance.

Now I have truck back the engine is throwing a code ' def pressure high'.

The dealer is now saying I need new def pump and its ridiculously expensive.

My issues are that it was perfect before the blow out and stood in body shop for several months.

Truck seems to run OK and no warning about 5 mph or anything - just this code.

Second I am not confident on this diagnosis from dealership.

All they did was read code and state new pump required.

Couldn't this be just an injector or an electrical issue with the pump?

Can you help with how I can check what's really happening.

2016 3500 Laramie Longhorn 70k miles.

Insurance declining it was anything to do with blow out so I'm looking at over 2k bill?

Thanks.