Tourneo rough running engine

I'm experiencing issues with my 2008 Ford Tourneo diesel, mileage 27143 km. The engine is running rough, the check engine light is on, and an error regarding "reset quantity drift compensation" is stored. I suspect a defective injection valve/injector. Has anyone encountered this?

4 comment(s)

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.

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