05 2.2 Turbo overboost - twiggy
Hi Can any one help????

I have a 607 2.2hdi 05 reg and latelt the ecu fault came up so booked in with my mechanic and he is baffled as to why this is doing it. it goes into limp mode and all his diagnostic checks ahve shown nothing wrong with the turbo.

Please someone help
05 2.2 Turbo overboost - Screwloose

What is the exact fault-code number?