Can anyone help please?

[didkobandita]

I just replaced a gas temperature sensor few days ago bit the mechanic told me that the manifold intake motor-flap needs changing because the engine turns off not smooth enough and of course I had that in the scan:
1 Fault Found:
4805 - Mass Air Flow during Regeneration too High
P145F 00 [101] - -
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 115446 km
Date: 2016.09.01
Time: 19:19:21
He explained me that if the flap does not work properly and can not get to the required position causes this issue.
Can anyone of you give me some more information and is this really the manifold flap?
Any help is appreciated
Thanks

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[didkobandita]

I forgot to tell what car is if it is not comming up under my signature; it is a4 2008 2.0tdi engine CAHA

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[didkobandita]

Hello everyone, I am trying to find out is the intake manifold can cause the fault I had. I am looking for a new one to replace but it seems that every one i find is with different part number. The one I have and I took a picture is 03L 128 063 CV 100 I have been googling for this for awhile but all what it comes is 03L 128 063 C only. Does anyone know will that fit or how can i found out please and does it need alignment or no if it is changed?
Thanks Guys