GFCI Outlet Keeps Tripping
A GFCI outlet that won't stay reset has detected a ground fault — a small amount of current (4–6mA) flowing outside the intended circuit path, which indicates a shock hazard. Diagnosing whether the fault is in the GFCI outlet itself, the wiring downstream of the GFCI, or in an appliance plugged into the circuit is straightforward: unplug everything on the circuit and attempt to reset. If it holds with nothing plugged in, add devices one at a time until the GFCI trips — the last device added is the problem.
Try the AI Diagnosis ToolAI Repair Tools
Common Symptoms
- GFCI outlet trips immediately when RESET button is pressed
- GFCI resets but trips again when an appliance is turned on
- GFCI outlet in bathroom protects outlets in another room that are also dead
- GFCI trips after rain or high humidity
- GFCI presses in but doesn't stay (won't reset at all)
Most Likely Causes
- 1
Moisture or Water in Outlet Box or Appliance (Most Common)
Water is the most common cause of GFCI trips in bathrooms, kitchens, garages, and outdoor locations. Even small amounts of moisture inside an outlet box, inside an appliance cord, or condensation on a motor creates enough leakage current to trip the GFCI. After water exposure, allow the outlet and any wet appliances to dry completely (24–48 hours) before resetting. Outdoor outlets should have in-use weatherproof covers.
- 2
Faulty Appliance on the Circuit
A failing appliance with degraded insulation creates a ground fault that the GFCI correctly detects and trips on. Hair dryers, power tools, refrigerators, dishwashers, and bathroom appliances are common culprits. The GFCI will reset normally with the appliance unplugged but trip immediately when the appliance is plugged in or turned on. The appliance needs repair or replacement.
- 3
Line and Load Terminals Reversed
GFCI outlets have separate LINE (power in) and LOAD (protected outlets downstream) terminal pairs. If the incoming power wires are connected to the LOAD terminals instead of LINE, the GFCI will malfunction — it may not trip on an actual fault, or it may trip continuously. This is a wiring error that requires the connections to be swapped. The LINE terminals are the ones closer to the TEST and RESET buttons.
- 4
Failed GFCI Outlet
GFCI outlets have a lifespan of 5–10 years. The internal GFCI module degrades over time, especially in humid environments. An old GFCI may trip erratically, fail to reset, or fail to trip on an actual fault (the most dangerous failure mode). Test any GFCI periodically with the TEST button — if pressing TEST doesn't trip it, the GFCI has failed and must be replaced even if it appears to work normally.
Not sure if this is the right fix for your exact model?
Upload a photo of your appliance label — Fix-It Fast AI will identify your exact unit and tailor the diagnosis.
Quick DIY Checks
If the GFCI is tripping due to water exposure, allow the outlet box and any wet appliances to dry completely — 24 to 48 hours — before resetting. Forcing a reset on a wet circuit bypasses the protection the GFCI is providing. In flood situations, have an electrician inspect the wiring before restoring power.
- 1Unplug every device connected to the GFCI circuit — including anything plugged into outlets that the GFCI protects downstream. With everything unplugged, press the RESET button. If it holds, the fault is in one of the devices — plug them back in one at a time to find the problem appliance.
- 2With nothing plugged in and the GFCI reset, press the TEST button — it should trip the GFCI and cut power to downstream outlets. Then press RESET to restore power. If TEST doesn't trip it, the GFCI module has failed and needs replacement regardless of other issues.
- 3If the GFCI trips even with all devices unplugged, check the outlet box for moisture and check the wiring for insulation damage. Also verify the LINE and LOAD terminals are wired correctly — with the breaker off, check that the incoming power wires (from the panel) are on the LINE side terminals.
Get the full fix — Pro members get unlimited AI diagnoses
Save your repair history, get step-by-step AI guidance on any electrical issue, and avoid $150+ service call fees.
Try Pro — $7.99/mo- 4Check for outlets in other rooms that are also dead — a single GFCI outlet often protects multiple downstream outlets, sometimes in unexpected locations (a bathroom GFCI commonly protects a hallway outlet, or a garage GFCI protects outdoor outlets). Reset the GFCI to restore power to these downstream outlets.
- 5If the GFCI won't stay reset with no loads connected and wiring appears dry and correct, replace the GFCI outlet — the internal module has likely failed. GFCI outlets are $15–$25 and are straightforward to replace.
Save $150+ on a single service call
Less than a cup of coffee — fix it yourself with expert guidance.
- ✓ Step-by-step repair guides with exact part numbers
- ✓ Expert diagnosis in seconds — 500+ problems covered
- ✓ Full tool list & cost estimate before you spend a dime
$150+ service call vs. $7.99/mo · Cancel anytime
Repair vs Replace
GFCI outlet replacement is one of the simplest electrical repairs — turn off the breaker, swap the outlet, restore power. The outlet costs $15–$25. If the repeated tripping is caused by a faulty appliance, replacing or repairing the appliance is the fix, and the GFCI itself may not need replacement. Only escalate to an electrician if the fault is in the downstream wiring rather than a device or the outlet.
Est. Repair Cost
$15–$25 GFCI outlet replacement
Est. Replacement Cost
N/A — GFCI outlet replacement is the standard repair
Recommended Tools & Parts
- Buy on Amazon →
GFCI Outlet 15A or 20A
GFCI outlet for bathroom, kitchen, garage, and outdoor locations. Use 20A (T-shaped slot) in kitchens and where 20A circuit is present; 15A elsewhere. TR (tamper-resistant) versions available.
$15–$25
- Buy on Amazon →
Outlet Tester with GFCI Test
Plug-in outlet tester that checks wiring polarity and tests GFCI trip function. Shows common wiring faults as indicator light patterns. Essential for diagnosing LINE/LOAD reversal.
$15–$25
- Buy on Amazon →
Non-Contact Voltage Tester
Confirms circuit is de-energized before removing GFCI outlet. Use before touching any wiring.
$10–$20
Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.
Still stuck? Let AI take a look.
Describe your problem or upload a photo — get a diagnosis in seconds.
Related Repairs
Circuit Breaker Keeps Tripping — Overload, Short Circuit, Arc Fault & Breaker Failure Diagnosis
Breaker tripping repeatedly? Overload is the most common cause — 15A circuits handle 1440W max, 20A handle 1920W. If it trips instantly with nothing plugged in, you have a short. Here's how to isolate exactly which fault type you have.
Read guide →Breaker Trips When AC Starts: Causes and Diagnosis
AC breaker tripping at startup almost always means a failed capacitor or locked-rotor current surge. Here's how to diagnose capacitor failure, locked rotor amps, undersized breakers, and wiring faults before calling an HVAC tech.
Read guide →EV Charger Breaker Keeps Tripping
EVSE tripping its breaker on every charge session points to a GFCI trip, undersized circuit, wiring fault, or a failing EVSE unit.
Read guide →240V Outlet Not Working
Dryer, range, or EV charger outlet with no power — usually a tripped double-pole breaker, open neutral, or loose terminal connection.
Read guide →Save $150+ on a single service call
Less than a cup of coffee — fix it yourself with expert guidance.
- ✓ Step-by-step repair guides with exact part numbers
- ✓ Expert diagnosis in seconds — 500+ problems covered
- ✓ Full tool list & cost estimate before you spend a dime
$150+ service call vs. $7.99/mo · Cancel anytime
Still not sure what's wrong?
Get an AI diagnosis in seconds — describe the problem or upload a photo.
Get an AI Diagnosis⚡ Get step-by-step help for YOUR specific appliance
Our AI diagnoses your exact model — not just generic advice. Upload a photo or describe the issue and get a repair plan in seconds.
No account needed for diagnosis. Cancel Pro anytime.
Related Tools
Frequently Asked Questions
- Why does my GFCI outlet protect outlets in a completely different room?
- GFCI outlets have LOAD terminals that protect any outlets wired downstream of them. Electricians often wire multiple outlets through a single GFCI to save cost (a GFCI outlet costs more than a standard outlet, so protecting several standard outlets through one GFCI is economical). The protected outlets don't have to be in the same room — code requires GFCI protection in bathrooms, kitchens, garages, and outdoors, but the protecting GFCI can be located anywhere in the circuit.
- My GFCI won't reset — it just won't stay in when I push it. Is it broken?
- A GFCI that won't reset at all (button won't stay in regardless) is usually detecting a live ground fault — meaning something on the protected circuit is actively leaking current. First unplug everything from every outlet the GFCI protects and try again. If it still won't reset with nothing connected, either the GFCI itself has failed or there's a wiring fault (damaged insulation, moisture in the box) on the circuit. Replace the GFCI and see if the new one resets — if not, the fault is in the wiring.
- How do I know which outlets are protected by my GFCI?
- Press the TEST button on the GFCI outlet — this trips the GFCI and cuts power to all outlets it protects. Then use an outlet tester or lamp to check which outlets in the area have gone dead. Check bathrooms, kitchen countertop outlets, garage, and outdoor outlets — these are the areas that require GFCI protection and are most likely to be wired through a common GFCI. Reset the GFCI when done and verify protected outlets have power again.