C1 check engine light air valve issue

I had a similar issue with my C1. Check engine light was on, and it was related to the air intake. Did you check the throttle body?

Could you elaborate on the specific components you inspected within the air intake system? Were there any diagnostic codes?

I didn't do the inspection myself. But the workshop said it was a small hose connected to the air valve. Maybe you should take it in.

I had the car inspected at a workshop. It was indeed a defective hose. The repair cost 175€. The issue is resolved.