Mobilio exhaust flap issue

Whoa, that's a lot of kilometers for a 2021! Louder exhaust and error codes definitely point to something being wrong. Is it consistently loud, or just at certain RPMs? Could be a flap actuator issue like you suspect, those things are notorious for failing. Have you tried visually inspecting the exhaust components to see if anything looks obviously broken or disconnected? It's a long shot, but worth a peek before you dive too deep.

Thanks for the quick reply. The exhaust is consistently loud, no matter the RPM. Can you give me more detail on what to look for during a visual inspection? What are the signs of a failing actuator or exhaust damage I should watch for? Are there any electrical tests to check the flap motor?

Okay, consistent loudness rules out some vibration-related issues. Honestly, without getting too involved with multimeters and wiring diagrams (which can get messy), it's tough to diagnose an actuator definitively at home. Look for obvious things like a physically broken linkage arm connecting the motor to the flap, or a corroded connector going to the motor. But since it's throwing an error code AND it's loud, I'd bet money on the flap being stuck open due to a failed actuator. Seriously, save yourself the headache and get it checked at a reliable workshop.

I appreciate the advice. I took it to a local workshop, and they confirmed the exhaust flap was defective and needed replacement. It cost 190€. Thanks for saving me from a long, complicated self-diagnosis.