Seat Mii engine stall at idle

I had a similar problem with my Mii. Check engine light and the engine stalling at idle. Could be your idle control valve. Has the car been idling rough?

Yes, the car idles very rough, especially when cold. The idle speed fluctuates noticeably. Did you also have an error code stored in the error memory? And was it definitely the air valve in your case?

Yes, error code was the same. And rough idling when the engine was cold, like you describe. I changed some parts before and nothing improved, so I brought it to a workshop. They said it was the idle control valve. I would suggest you do the same. Good luck!

The workshop confirmed the heavily contaminated intake. They replaced the idle air control valve and cleaned the intake system. The total cost was 425€. Everything is running smoothly now. Thanks again for your help!