I've got a niggly fault which I need advice with, when I accelerate hard and rev upto 3500-4000 in 3rd my EML comes on and power is lost. I can clear the light and get power back by switching off ignition.
I've read the fault code and I've got
P0234-5A Boost pressure control cct negative deviation
My car is a 06 1.9 CDTi 150 mileage 101000 and fitted with a green box.
I cleaned the EGR and boost sensor a couple of months back
Any help would be appreciated.