Arkana Hybrid Overvoltage Faults

Sounds familiar! I had similar overvoltage problems with my old BMW 3 series, although it was a diesel. Loads of errors popping up and the car acting strangely. It might be worth checking the battery's condition and the charging system. Have you had the battery tested recently?

Thanks for the quick reply! No, I haven't had the battery tested recently. I just assumed overvoltage meant something was putting too much power into the system, not too little. So a weak battery could actually trigger overvoltage errors?

Yeah, it's counterintuitive, I know! But a failing battery can cause the ECU to freak out and throw all sorts of weird codes. The charging system might be overcompensating trying to charge a bad battery. I'd definitely get the battery checked, but honestly, with that many electrical issues, it's probably best to get it to a workshop with the right diagnostic tools.

Okay, that makes sense. I'll get the battery tested ASAP, but you're right, probably best to have a pro look at it. Thanks for the advice! It turns out it was the battery, just like you said. Got it replaced for 290€ and the car's running perfectly again!