VW TDI forum, Audi, Porsche, and Chevy Cruze Diesel forum banner

2014 Audi Q7 3.0L TDI Prestige, CEL on and in Limp mode.

379 Views 1 Reply 2 Participants Last post by  Jayhawk94
(Moved to Audi Forum, but I don't know how to delete this)
Hello everyone.
I recently bought a 2014 Audi Q7 3.0L TDI Prestige. It ran fine for a few days then CEL illuminated (steady) then about a day later it would go into limp-mode until I shut if off and restarted, then limp mode was off but CEL still on.
Now it is in constant limp and VCDS shows:

Font Rectangle Circle Pattern Number

Font Art Pattern Parallel Circle

Font Line Rectangle Number Brand

Font Art Rectangle Number Brand

Is it common for the variable turbo vanes to get carbon buildup and stick?
And, if so, does that fry the actuator?

Good to be here. Thanks!
See less See more
1 - 1 of 2 Posts
I had what I think was the same code and behavior. My issue was that I’d had a local performance shop install a Snow Performance water methanol system. It had been running well but its first true test came on a long road trip towing a trailer. The post intercoooler intake hose (cold side) had slipped off the water-meth injection ring resulting in probably an almost complete loss of intake pressure. It was effectively a normally aspirated engine at that point. Once I fixed the issue the CEL eventually cleared and it’s not reoccurred.
The upshot of all that is that, based on my individual experience and n=1, there may be a post-turbo leak in your intake system.
  • Like
Reactions: 1
1 - 1 of 2 Posts