My husbands i3 just stopped charging in its usual outlet in the garage last night. The outlet still gets power, but when we plug the charging unit in, "power fault" lights up solid red. We thought something was wrong with the charging unit itself, but after messing around with it for a while, I learned that it works if I plug it into the bathroom GFCI outlet, running an extension cord through the window... not ideal. Obviously I can get a GFCI in the garage, but that will take a few days.
Any ideas why this would come about suddenly?