BenzV12

I am occasionally having strange jolts with the car The car is jarring for a few seconds just above idling speed and a few seconds later it returns back to normal .
I thought there was something wrong with the tranny and it turned out to be a turbo pressure problem .
I have no engine light popping out the dash either .
I visited indie shop with DAS STAR machine and they retrieved these fault codes .
P023400 :Turbo charging pressure A
P017227 : Rich mixture ,Bank 1
P023664 : Turbo pressure signal

A few days before the problem I describe ,the car was sluggish . I was doing 60 km/h and floor it it too many seconds for the car to gain speed . The RPM was lounging at 2500 RPM although I took over manual shifting using the buttons behind the steering wheel .
At the next proper occasion, I stopped the car and restarted the engine and everything was normal , the car was responsive to my commands .

However, the problem at the 1st paragraph is worse because everyone around looking at you when the car rocking back and forth