C230 V6 and 0521
Among other quite understandable ones, my ECM has only one error 0521 (The charge movement flap (cylinder bank 1) has a malfunction). There are no other errors related to engine.
Engine works well besides slight vibration on cold start.
Should I prepare for intake manifold replacement or there are possibly cheaper ways to fix it (if it actually needs a fix)?
The error is CURRENT and STORED so presumably it's not a blip.




