Look for any other GFCI or GFI outlets to be tripped. If there are no other outlets check for circuit breakers. If you have an inverter to power this with no shore power or generator, check circuit breaker on inverter. If all above is OK then you will probably have a bad receptacle relay and checking to be sure you have 120 vac feeding it will verify if it is bad or not.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7