Trouble Code P0521
Thread Starter
Junior Member
Joined: Apr 2018
Posts: 55
Likes: 2
From: Forked River, NJ
2014 C63
Trouble Code P0521
Today I ran a scanner and a trouble code came up. P0521 The charge movement flap (cylinder bank 1) has a malfunction. I don’t have a check engine light on or any issues with how the engine runs. I also have no idea what this trouble code means. Any ideas?
Thread Starter
Junior Member
Joined: Apr 2018
Posts: 55
Likes: 2
From: Forked River, NJ
2014 C63
Thanks Plutoe you are a giagantic help! I don’t know what I would have done if you didn’t give me the brilliant idea of just googling the problem...seriously you are awesome. I’m so glad I took the time to start a post here instead of just going right to google.
Junior Member
Joined: Jan 2019
Posts: 61
Likes: 11
From: Melbourne, FL
2011 C300 Sport
Try these:
https://mbworld.org/forums/e-class-w...or-0521-a.html
https://www.mercedesmedic.com/merced...le-lever-flap/
https://www.pelicanparts.com/techart...tor_Repair.htm
Since it has not thrown the code yet, and you have not noticed any issues, it may only occur at higher RPM's where you don't normally play..
https://mbworld.org/forums/e-class-w...or-0521-a.html
https://www.mercedesmedic.com/merced...le-lever-flap/
https://www.pelicanparts.com/techart...tor_Repair.htm
Since it has not thrown the code yet, and you have not noticed any issues, it may only occur at higher RPM's where you don't normally play..
Thread Starter
Junior Member
Joined: Apr 2018
Posts: 55
Likes: 2
From: Forked River, NJ
2014 C63
Thanks Glock19 I was getting trouble code because my air flap lever was busted on the front of the intake manifold. I ordered a rebuild kit from https://www.autohausaz.com/pn/2721402401RPRM and it fixed the issue.
Junior Member
Joined: Sep 2011
Posts: 25
Likes: 2
From: Arizona
2014 CLS63
I know this is an old thread but maybe you can help. I have a 09 SLK which has the same problem. I can see that the lever is broken. Did you have to remove the entire manifold? What happens if it doesn’t get fixed right away? Can I still drive it? Thank you for any help to these questions.
