Tourneo rough running engine

Yes, I had a similar issue with my old BMW 3 series. Same error, rough running, check engine light, all pointing to fuel injection. Have you checked the airflow sensors? They can sometimes trigger similar errors.

Thanks for your input. I haven't specifically checked the airflow sensors yet. Were the symptoms identical in your case, and were there any other error codes?

The symptoms were very similar. I also had some misfire codes. Considering the "reset quantity drift compensation" error and your symptoms, it's likely an injector issue. I recommend a workshop visit. It's a specialized fix.

Thank you for the advice. I took it to the workshop. Indeed, the diagnosis pointed to a defective injector. The repair, including injector replacement and system reset, cost 515€. The issue has been resolved.