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u3003:17-0B, over voltage code

Slow Yote

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Joined
Jul 27, 2024
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Location
Central Ohio
First Name
Seth
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2018 GT PP1
Hey yall, so I’ve tried looking up more information, etc and haven’t been able to find anything here so figured I’d post.

I got u3003:17-0B, system overcharging and only “issue” has been the radio/GPS system shuts off to “save the battery”. I tested the alternator, tested the battery, checked voltages, reset BMS and raised the voltage charges in forscan, still nothing.

So, I’m replacing the alternator since the 18+ voltage regulator is on the back of the alternator.

I also haven’t been able to find 18+ alternator change “how to”, so I’ll do what I can to map out the issues I run into when I do it.
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