Clio engine stalls fuel composition error

Incorrect fuel composition errors can be tricky. I've seen similar issues on other cars, and often it boils down to a sensor malfunction or a wiring problem. Have you noticed any changes in fuel economy or any unusual engine knock?

Thanks! Fuel economy seems normal, but I'm not really sure what an engine knock sounds like. Could it really be just a sensor, even with the stalling?

It's possible. The stalling could be a consequence of the ECU trying to compensate for what it thinks is a bad fuel mixture. Given the error and the symptoms, a defective cable or plug connection of a component seems like a plausible cause. To be sure, you should bring your car to a workshop.

Alright, thanks. I took it to the shop, and you were spot on! A wire to the fuel composition sensor was loose. They fixed the connection for 95€. Runs like a charm now!