Ok i need help. Got a new car,

My mondeo when i accelerate after 70mph gos into what you call limp mode i turn the car on and of and its fine after.

I got engine malfunction come up on the dash.


Error Reads: P0234 Turbocharger / Supercharger "A" Overboost

Also are these turbos ment to be noisy? mine sounds like a loud jetplane i didn't no i old owner modified it?