have you tried the manifold runner basic setting in VCDS this may clear your fault, taken from the Rosstech Wiki -
Intake Manifold Runner
Prerequisites:
Ignition ON
Engine OFF
System voltage at least 11.0 V.
[Select]
[01 - Engine]
[Basic Settings - 04]
Group 142
[Go!]
Activate the Basic Setting.
[ON/OFF/Next]
Wait until Field 4 shows "ADP. O.K.".
[Done, Go Back]
[Close Controller, Go Back - 06]
Switch Ignition OFF for at least 60 seconds.