after sifting through the manual i see nothing about a turbocharger causing this issue.
The blip on the monitor you see sounds like the N75 charge pressure control solenoid in operation as it says it is actuated in a pulse manner so that the extreme values for charge pressure control can be read in the measured value block.

For both those codes it speaks of leaks in the hosing and specifies using a special test guage to check the system for leakage. They call it a V.A.G. 1687 , also a mention of an ultrasonic tester V.A.G. 1842. They basically look like a sophisticated vacuum air gauge tool.