I wouldn't want to climb in the attic either. I would open all devices in that circuit first.
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The light switch controls the overhead light in the garage. Power feed comes from the crawl space (guessing here, cars have wiring diagrams houses do not damn it). I have checked the outlets in the kitchen and they are all working. I supposed I should check the three rooms closest to the garage before hitting up the attic. My master bed and bathroom and living room as well.
Check for continuety between the ground and neutral, if you have it that shows the neutral is likely intact. You should not have to go into the attic unless there is a j box up there which has a failed splice in it, when was the house built? Did you look in the garage, bathroom, unfinished basement, and outside outlets for a tripped gfi as stated earlier? The 1.something voltage you see is likely a phantom reading and meaningless.
This- you started at one end, and don't want to go to the middle because it sucks...[Coffee]
so try starting from the other end- but you'll have to know which breaker it is (or test them all)
If it's not the 1st stop after the breaker, it could be a junction in another outlet box. Highly unlikely it's in the attic/crawlspace- rodents will chew wire insulation, but they're not so fond of copper... is there a GFCI outlet in the chain (I've got an outlet or 2 in the garage that are daisy-chained after a GFCI in the laundry/utility room)
Remember it is probably not on its own circuit the gfci may be in the bathroom or elsewhere
Thank you everyone, GFI in the Master Bath was popped. Everything all better now and no crawling in the attic. Thank you everyone!