aaronknight99

Mini Roadster ECU Issues

I'm at my wit's end with my 2014 Mini Roadster. It's got about km on it, and the engine control unit seems to have gone haywire. I am experiencing significantly reduced engine power, and the car diagnostics keeps throwing an error stored in the error memory. I've been doing some research, and a defective main relay seems like a likely cause. Has anyone else experienced this?

4 comment(s)

That's a frustrating situation. I had a similar issue with my Mini Cooper a while back. Same symptoms: reduced engine power and error codes. Have you checked the vehicle electronics for any obvious shorts or loose connections? A faulty sensor could also trigger the ECU to behave erratically. Is the error consistently present, or is it intermittent?

Thanks for the reply! Regarding the vehicle electronics check, are there any specific areas you'd recommend focusing on? And did you eventually resolve your issue? If so, what was the culprit?

Yes, my issue turned out to be a faulty relay causing the engine control problems. Based on your description and the error codes, I'd strongly suspect the same. I replaced the relay, but the error persisted. Ultimately, I had to get the ECU repaired at a workshop specializing in automotive electronics. I would recommend visiting a professional to fix the issue.

Just wanted to provide an update. You were spot on! Took my Mini Roadster to a certified mechanic. Car diagnostics confirmed a defective main relay. ECU repair was performed, and the reduced engine power issue is now resolved. Total cost was 120€. Thanks a lot for your help!

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