History on the truck: 2011 RAM 3500 SRW. 281000 miles.

I had the emissions deleted at 225000.

Best truck I’ve owned.

Yesterday: batteries needed replaced, had to jump it twice.

Once they were replaced I noticed the engine brake wasn’t working.

This morning it threw a CEL: P00AF.

I drove it down the street and engine brake was working again but after looking at this code I am afraid to drive it anywhere.

One more note is that there seems to be soot coming into engine compartment which wasn’t there three weeks ago.

Also a last thing, when I cycle the key to on I can hear the actuator cycling the turbo so I’m really confused as to what it might be.

Any insight would greatly be appreciated.

My first post but I come here a lot to see what other Cummins people have going on.

Thanks in advance.

Shane.