What to do right now
- Check the panel for a tripped breaker on that circuit and reset it once if needed.
- Unplug everything from the GFCI and any outlets it protects, then press reset firmly.
- If it is an outdoor or garage GFCI and it has been raining, give it time to dry out before trying again.
- If the GFCI is wet, scorched or buzzing, leave it alone and keep people away from it.
Common causes
No power reaching it
Most GFCIs will not reset without power. A tripped breaker or a failed connection upstream leaves the reset button with nothing to latch.
Moisture
Rain, condensation or water in an outdoor box or damp garage is a very common reason a GFCI trips and refuses to reset.
A fault in something plugged in
A worn appliance cord, an old freezer, a pressure washer or holiday lights can leak current and trip the GFCI as soon as it resets.
A fault in downstream wiring
Damaged wiring or a wet outlet further down the circuit can keep the GFCI tripping even with nothing plugged in.
The GFCI has worn out
GFCI outlets do not last forever. Older units can fail so they will not reset, or fail in a way that leaves no protection at all.
Signs it's more serious
- The GFCI trips again the moment it resets, with nothing plugged in.
- Water is visible in or around an outdoor or garage outlet box.
- The outlet is discolored, warm or has a burnt smell.
- Several GFCIs around the house are tripping, especially after storms.
- You felt a tingle or shock from something on that circuit.
When to stop and call. Do not keep resetting a GFCI that trips instantly, and never bypass one by using a different outlet with an extension cord. Call an electrician if the outlet is wet, if you felt a shock, or if there is discoloration or a burning smell. If you see smoke or flame, leave and call 911. Anyone who got a noticeable shock should be checked by a medical professional.
Safe things you can check or note
- Note which outlets lost power along with the GFCI.
- Pay attention to whether tripping follows rain, washing the car or heavy dew.
- Plug appliances back in one at a time after a successful reset to see if one is the trigger.
- Check the outdoor outlet cover to see if it closes fully with a cord plugged in.
Leave covers, boxes and the panel closed. Noting what you see is enough; testing and repairs belong to an electrician.
What an electrician typically checks
An electrician confirms power is reaching the GFCI, tests the device, and then isolates each outlet and cord on the protected circuit to find the leak. Outdoor boxes often need new in-use covers or sealed fittings, and worn units get replaced through GFCI outlet installation.
If the fault is in wiring rather than a device, they trace it and repair the damaged section. When the GFCI has no power at all, the problem looks more like a dead outlet and gets traced upstream.
Preventing it from coming back
Use weather-resistant in-use covers on outdoor outlets, keep cords out of standing water, and press the test button once a month to make sure each GFCI still trips and resets. Middle Tennessee spring storms drive rain sideways into outdoor boxes, so a GFCI that fails after every storm is telling you the box needs better protection. Pool, hot tub and dock circuits deserve extra care; see pool electrical work.