5.9L Turbo Issues.
I just bought a 2007 2500 with the 5.9L and the Banks 6 gun with exhaust. It ran strong pulling a trailer all the way across country but this week started having issues.
I've popped the following codes:
P0669 Boost Key on Rationality
P0299 Boost in Range Low
When I've popped the P0669 code alone, the truck drives OK, but the turbo seems like it's lagging. Using the Banks PDA, the boost level hangs at 7 when I gas it, then jumps up to the 25-30 range.
When I popped the P0229 code, the truck had no power and drove like it had no turbo.
I've used the PDA to reset the engine codes, but it keeps coming back.
Thoughts on what's causing this?