My power outlet on my Nissan Altima quit working. I have checked the fuse boxes inside the car and under the hood, cannot seem to find the appropriate fuse. Anyone have any idea which fuse it might be or the cause of the problem?

I checked all fuses with a test light, seem to be working--any other suggestions?

Check all under-dash and under-hood fuses with a test light or multimeter:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-46563-3.html#post252145

Just look in your owners manual there is probably a diagram of some sort in there for fuses.

Location of power outlet fuse on 2004 nissan altima