C6 Exhaust Flap Issue

I had a similar issue with my C6 a while back. Loud exhaust and error codes sound very familiar. Is the flap actuator playing up? Could be a blockage preventing movement. Have you checked for damage or corrosion?

When you say 'flap actuator', are we talking about the same thing? Where is that located, and how difficult is it to check? I'm willing to get my hands dirty if it saves a shop trip.

Yes, I am referring to the same component. Given the symptoms and my previous experience, it is highly probable that the exhaust flap is defective. However, without proper diagnostic tools and expertise, it might be challenging to pinpoint the exact cause. To ensure the issue is resolved correctly and prevent further damage, I would advise consulting a qualified workshop.

Took it to the shop, and you were spot on. The exhaust flap was indeed defective. Cost me 190€ to get it sorted, but at least the C6 is purring again. Appreciate the help!