XSeries-forum

Clocking a lot of miles weekly.

Every now and again, usually after when cruise control has been set for speed camera zones I accelerate and no boost kicks in.

This corrects its self after a few miles?

Current Error Codes:

• 4667 Particle Filter System
  452A Info - Particle Filter System
  4501 Exhaust gas circulation control deviation
  4507 Exhaust gas circulation control deviation
  3F40 Rail Pressure Senor offset test
  4222 Cylinder 2 control

Has it had the swirl flaps removed? Several reports that 4667 is the DPF regen happening too frequently and 452A that the DPF is end-of-life. Both can be caused by swirl flap deletion but only show up many thousand of miles later.

Swirl Flaps still there.

I also have a blue tooth OBD, if I reset all the error codes the boost comes back.

The Dpf end of life wont cause any running issues as long as the dp isf still working its just an annoying warning that appears after 10 mins . Can you run a smooth running test as it sounds like injector 2 is having trouble but I think the egr can cause problems if its stuck open too.

That one root cause eliminated then. As above, injector two not happy and the EGR with it.

This was a 4507 fault for anyone interested.

Clear fault and turbo returns

Still not sorted.

The egr coolers have a habit of leaking plus there is a return spring underneath that breaks from what I've heard and will stop it closing properly so id check for that , it sounds like the egr isn't closing causing no power .