Banging noise from under hood (lock/unlock)

[friedymeister]

Hi everyone,

A new issue with the 2011 135i Convertible. When I unlock or lock the car I am hearing a BANG BANG BANG BANG BANG noise. I attached a video below. Idle has had some issues lately (with a/c on, sometimes car will stall when I put the clutch in or RPMs drop very low and nearly stall).

Just had the HPFP replaced a few months ago.

Thank you in advance.

https://drive.google.com/file/d/19uT...usp=drive_link

Update with Codes:
2DD6 Valvetronic servomotor, position sensors: Short circuit or line disconnection
2DD8 Valvetronic, servomotor, poistion senosors: signal implausible
2DCF Valvetronic system: no movement detected