ben_silber58
Mini One Diesel Engine Trouble
Summary of the thread
A 2020 Mini One diesel is experiencing rough engine performance and a check engine light, with an error indicating a need to reset quantity drift compensation. This issue is likely due to a defective injection valve injector. The suggested solution involves taking the car to a workshop for proper diagnosis, injector replacement, and performing the necessary reset procedure. After following these steps, the engine runs smoothly again.
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4 comment(s)
ben_silber58 (community.author)
Compensation adjustment? What exactly does that involve? And how would I go about doing it?
robincrystal1
Well, in my case, the compensation adjustment involved the ECU trying to correct for a faulty injector. The car was constantly trying to adjust the fuel mixture because one injector was underperforming. Eventually, it couldn't compensate enough, hence the error. I wouldn't attempt a system reset myself. I recommend a workshop. They'll diagnose properly and probably need to replace the injector anyway. And they will definitely perform the reset procedure afterwards.
ben_silber58 (community.author)
Took it to the shop, and you were spot on. Injector was defective. They did the replacement and the reset procedure. Cost me 515€ but the engine runs smoothly now. Thanks for the help!
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MINI
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ONE
robincrystal1
Rough running and check engine light? Sounds suspiciously like what happened with my old Opel astra. I had similar symptoms. Have you checked the onboard diagnostics for any specific error codes? It might be related to fuel mixture. I wonder if a compensation adjustment could help. Does your fuel economy seem worse than normal?