vrs tfsi emmision light diagnosed

I tried to post in the thread I started on page three but it would not post, I fixed one of my problems I developed a rattle under the car it turned out to be a plastic fuel line vibrating on the body, the emission lamp was diagnosed as follows check ecu software up to date,​ check actuation of inlet manifold runner,checked evap tank ventilation hose after solenoid FAULTY ONE WAY VALVE the part number of the hose req is 06F133781L( hose set with clips non return valve) any one had this fault, it looks hard to fit I thought it would have been the pcv valve but it was changed 4 yrs ago​​