Mini Cooper lean running issues

Experiencing lean running issues with my 2022 Mini Cooper. Symptoms include reduced engine power, check engine light, rough running, and jerking during acceleration. Suspect a defective injection valve injector. Any thoughts before I dive deeper?

4 comment(s)

Sounds like what happened to my Cooper. Check engine light and all. Any codes related to lean running? I'd start by checking the fuel injectors and maybe even the EGR valve. Have you inspected the throttle body for carbon buildup?

Codes were pointing to lean condition bank 1. You mention the EGR valve and fuel injectors. Did you have the same error code, and did replacing the injectors solve it? Was there anything else involved?

Yep, similar code. Injectors fixed it for me, though I'd still suggest a proper diagnostic. Might also be worth checking spark plugs if they haven't been changed recently. If it is the injectors, consider doing all of them. Otherwise, a trip to the workshop might be unavoidable.

It was indeed a faulty fuel injector. Replaced all four, and she's running like new. Total cost 515€. Thanks for the input!

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