Have had the car in for a diagnostic this morning and its come back with the below error codes

P0222 - Throttle valve module poss sensor 2 signal too low

P0122 - Throttle valve module poss sensor 1 signal too low

P2135 - Throttle valve module poss sensor 1/2 implausible ratio

P2127 - Accelerator pedal sensor position sensor 2 signal too low

P0234 - Boost pressure for exhaust gas turbocharge too high

U0120 - Unknown

P0562 - System power supply too low

P0299 - Boost pressure for exhaust gas turbo charging too low

They have been cleared off. When I then started the car, ESP System fault displayed with the yellow TC light on the dash. After a few miles, the CEL light underneath that them came on. Car seems to drive fine.

It did have a failed alternator when I bought it which I had replaced. This is the first reset its had since then.

Can anyone help me figure out if any of the codes relate to the ESP. I've heard stories from dirt in the wheel speed sensors to a four figure bill for an ABS pump. The garage are getting the car back next week for more work and I'd like to be forearmed with knowledge about what it could be and cost.

Cheers

Matt