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gretaschmidt6

Mini Paceman diesel rough running issue

I seek your collective expertise regarding a perplexing issue with my 2014 Mini Paceman diesel, which has accumulated 172130 km. The engine exhibits rough running characteristics, accompanied by illumination of the check engine light. Diagnostic interrogation reveals an error related to reset quantity drift compensation. My suspicion points towards a defective injection valve or injector. I am contemplating a compensation adjustment or a system reset. Any insights or recommendations would be greatly appreciated.

Summary of the thread

A 2014 Mini Paceman diesel with 172,130 km is experiencing rough running and a check engine light, with diagnostics indicating an error related to reset quantity drift compensation. The suspected cause is a defective injection valve or injector. A suggested solution is to perform a compensation adjustment or system reset. After taking the vehicle to a workshop, a defective injector was confirmed and replaced, followed by a compensation adjustment, resolving the issue.

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4 comment(s)

jasminhartmann1

Rough engine running and a check engine light? Sounds familiar! I had a similar issue with my old Skoda, though it was a petrol engine. The error codes pointed towards the fuel injection system. Have you checked your airflow sensors? A faulty sensor can throw off the fuel mixture and lead to similar symptoms. Also, what's your fuel economy like?

gretaschmidt6 (community.author)

Interesting. You mentioned error codes pointing towards the fuel injection system. Do you recall specifically what the codes indicated, and what steps you took to diagnose the root cause, specifically regarding the injectors and the compensation adjustment?

jasminhartmann1

Okay, so the codes on my Skoda indicated a fuel trim issue, which basically means the engine's computer was trying to compensate for an imbalance in the air-fuel mixture. I didn't have the equipment to properly diagnose the injectors themselves, so I took it to a trusted mechanic. They confirmed it was a faulty injector, replaced it, and performed a compensation adjustment which, from what I understand, involves recalibrating the fuel injection system after replacing an injector to ensure it's working optimally with the others. Given your symptoms and the error code, I'd suggest taking your Mini to a workshop that can perform a proper injector test and compensation adjustment.

gretaschmidt6 (community.author)

Acknowledged, and many thanks for the insight. I followed your recommendation and took the Paceman to a workshop equipped with the necessary onboard diagnostics. It was indeed a defective injector. After replacement and a compensation adjustment, the engine runs smoothly again. The total cost amounted to 515€. Much appreciated.

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MINI

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PACEMAN