Need Help. Loud tapping and check engine light (Video included)

[yung turbo]

I started my car. It rumbled and shook the shut off. tried to restart and it started on but shook and the check engine light came on the i heard the loud tapping that sounds like valve tapping. Already checked cam follower and hpfp and they are fine.

[Okedokey]

Check your HPFP cam follower, if thats ok, you need to check the cam timing chain and tensioner at the rear of the engine behind the vacuum pump.

[aluthman]

Scan for codes since you have a CEL. If your CF/HPFP are fine, it's likely your cam chain tensioner.

[yung turbo]

Unfortunately my ebay cable won't read the engine codes for my B7 so I am unable to scan for codes.

Scan for codes since you have a CEL. If your CF/HPFP are fine, it's likely your cam chain tensioner.

[miA4]

judging by the way it's idling, I don't think it's a valve... I don't know what it is, but it doesn't sound like a valve at all. i'll put my money on the rear cam chain tensioner.. also, being inside the garage only makes the sound worse than what it actually may be.

[BenMTL]

1) Get your codes read by a real cable/VCDS.

2) Probably cam chain tensioner.