Vrs tdi eml light

Hi

ive got fault code p2015,2005 and 2006 after a scan. Can clear them but they return after a decent run. 

The motor controlling the inlet manifold flaps has been replaced and I have also brought an aluminium lump which bolts behind the motor and is supposed to stop the code. Unfortunately this hasn't worked. 

With the mot imminent any help of how to clear this issue would be greatfully received! The flaps are all free and move easily btw 

thanks