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Diagnostic guide

GFCI Won't Reset

A GFCI outlet or breaker that will not stay reset — there is a ground fault somewhere on the circuit that must be found.

System
Electrical
Causes covered
6
You can check
3 without a technician

Stop and read this first

  • A GFCI that will not reset is doing its job — there is a real ground fault. Do not bypass it.
  • Never install a standard outlet in place of a GFCI where code requires GFCI protection.
  • Water and electricity near a tripped GFCI means turn off the breaker before investigating.

Work through these in order

Ordered from most to least likely. Working top down means you rule out the cheap, common causes before paying anyone to look at the expensive, rare ones.

  1. Moisture in an outdoor or bathroom outlet

    CommonYou can check
    How to check
    GFCI tripped after rain, irrigation, or shower use. Exterior outlet cover is cracked or open.
    The fix
    Dry the outlet and reset. Replace damaged weatherproof covers ($10 to $25). If it trips again when dry, the outlet itself may be failed.

  2. Ground fault in a connected appliance

    CommonYou can check
    How to check
    GFCI trips when a specific appliance is plugged in. Unplug everything and reset — if it holds, add devices back one at a time.
    The fix
    Repair or replace the faulty appliance. A failing motor or damaged cord is the usual cause.

  3. Failed GFCI outlet

    CommonYou can check
    How to check
    GFCI will not reset with nothing plugged in and no moisture present. Unit is over 10 years old.
    The fix
    Replace the GFCI outlet ($15 to $25 DIY, $150 to $250 professionally). GFCIs have a finite lifespan and should be tested monthly.

  4. Ground fault in downstream wiring

    PossibleNeeds a pro
    How to check
    GFCI trips immediately on reset even with a new outlet and nothing plugged in.
    The fix
    An electrician traces the circuit for a damaged wire, loose ground, or nail through a cable ($200 to $600).

  5. Shared neutral on a multi-wire circuit

    PossibleNeeds a pro
    How to check
    GFCI trips when a device on a different circuit runs. Recent electrical work or DIY wiring.
    The fix
    An electrician separates the neutrals or corrects the wiring. Shared neutrals on GFCI-protected circuits cause nuisance tripping.

  6. Failed GFCI breaker in the panel

    PossibleNeeds a pro
    How to check
    A GFCI breaker in the panel (not a receptacle) will not reset. Breaker is warm or has tripped repeatedly.
    The fix
    An electrician replaces the GFCI breaker ($200 to $400). Do not substitute a standard breaker.

Once you know what it is

Step one

Know what it should cost

Get the range before you call, so the first number you hear is not the only number you have.

Step two

Decide repair or replace

On equipment near end of life, the repair is usually the first of several.

Step three

Check the quote

Compare against the typical range and confirm the terms before you sign.

Adding an Electrical Circuit cost guideRepair or replace calculatorEstimate repair costAnalyze a quote

What the fix costs

Tools for this decision

Other symptoms