Skoda Octavia Diesel Engine Trouble

I'm stumped. My 2001 Skoda Octavia diesel is running rough, and the check engine light is on. My OBD2 reader shows a 'reset quantity drift compensation' error. From what I've read, that suggests a bad injection valve or injector. Could that also affect fuel economy? Any thoughts before I start taking things apart?

4 comment(s)

Rough running and a check engine light? I had similar problems with my Renault Megane. It ended up being faulty airflow sensors messing with the fuel injection. Have you looked at those?

Airflow sensors? Where are they located, and how would I check them? Could that trigger the reset quantity drift compensation error? I thought that was specific to the fuel injectors?

It could be the injectors. The error code does sound specific. If you're not comfortable working on the fuel injection system, I'd suggest a trusted mechanic. They can diagnose it and do the compensation adjustment after replacing the injector.

Closing this out. I took it to a workshop based on the advice here. It was a defective injector. They replaced it, did the reset quantity drift compensation, and ran some diagnostics. It set me back 515€, but the car runs perfectly now. Thanks for the assistance!

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