With power confirmed and nothing connected, a GFCI that will not engage has most likely failed internally. A device whose TEST button no longer trips it is also no longer protecting and should be replaced.
source-governedDiagnostic estimate. Not a quote, not a substitute for a licensed electrician.source pack dated 2026-06-20 · authority hashes pending
Where to stop. Resetting and plug-in testing are homeowner-safe. Opening the box, checking terminals, or rewiring line/load means live conductors — if you cannot do that safely with the power off at the breaker, stop and call a licensed electrician. Water plus electricity is a shock hazard; do not keep resetting a wet outlet. This is general information, not a quote and not a substitute for a licensed electrician.
Electrical Fault Check provides general diagnostic information only. It is not professional advice, not a quote, and not a substitute for a licensed electrician. Do not work on live wiring. If you see smoke, sparks, burning smell, heat, shock, water exposure, or repeated tripping, stop using the circuit and contact a licensed electrician or emergency services as appropriate.