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🍁 Built for Canadian homes — written to the Canadian Electrical Code and provincial rules. Not intended for use outside Canada.
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A GFCI outlet won't reset

A GFCI that won't reset is frustrating, but nine times out of ten it's protecting you from a real fault rather than failing — and the fix is often free. The move is to remove what it's reacting to, not to force it back on. The one exception is an outlet that's warm, buzzing, or scorched: that one gets its breaker turned off, not fiddled with.

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Select anything that matches and the checklist below reorders to fit. Not sure? Skip it.
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In Canadian homes, start by unplugging everything on the circuit — every cord in this outlet and in any outlet that went dead with it — then press RESET firmly. A GFCI trips because it sensed current leaking to ground, and the usual source is a faulty appliance, a worn cord, or a wet tool, pump, or space heater downstream. If it holds with everything unplugged, plug items back one at a time until it trips again: that device is the culprit, and it needs repair or retirement, not a workaround. If it still won't reset with nothing plugged in, move on to the causes below — but never bypass the GFCI to force it on.

Ranked from real-world failure data. The order updates as you select what you’re noticing above.

Likely causes, in the order to check them

Showing the typical order
Beginner-friendly Doable, with care Safety-critical Call a pro

visibilityHow to check — the unplug-and-reset test

  1. Unplug everything on the circuit — the cord in this outlet and in every outlet that went dead with it. A GFCI protects a chain, so a fault three outlets away still holds it tripped.
  2. Press RESET firmly until it clicks and stays in. If it holds now, the fault was in something you unplugged.
  3. Plug items back one at a time, testing after each. The one that trips it again is the faulty appliance, cord, or tool — repair or retire it; don't keep resetting past it.
  4. If it still won't hold with nothing plugged in, the fault isn't a downstream device — move on to moisture, the upstream GFCI, and the other causes.
buildNo tools schedule10 min

handymanHow to fix it

Remove the faulty item from service — a damaged cord, a failing appliance, or a wet tool. Repair it properly or replace it; a GFCI that trips on a real ground fault is warning you the device is unsafe. Once the offending item is gone, the GFCI resets and holds normally.

schedule10 min savingsusually free
report A tripping GFCI is doing its job — never bypass itIt is tempting, when a GFCI won't reset, to jumper it, wire past it, or swap in an ordinary outlet so the plug finally works. Don't. The GFCI trips because it detected current leaking to ground — the exact condition that electrocutes people in wet rooms and outdoors, which is why the Canadian Electrical Code requires GFCI protection there. Defeating it removes that protection and leaves the real fault live. Find and fix what it's reacting to; if it won't reset with everything unplugged and dry, replace it with another GFCI or call an electrician — never downgrade to a standard receptacle.

visibilityHow to check — find the real reset

  1. Confirm this outlet is dead on both halves with a lamp you know works or a non-contact tester — if there's no power at all, its own RESET can't do anything.
  2. Walk the bathrooms, kitchen, laundry, garage, basement, and outdoor outlets looking for another GFCI with its RESET button popped out. Check behind storage — builders tuck them in odd corners.
  3. Check the panel too: a GFCI breaker has its own TEST button and may sit tripped in the middle of its travel. Push it fully OFF, then ON.
  4. Reset the upstream device first, then come back and press RESET on this outlet.
buildNo tools schedule15 min

handymanHow to fix it

Reset the upstream GFCI or GFCI breaker, then this outlet should come back with it. If the upstream device won't hold, treat that one as the real problem and work through this page for it — the fault is on the shared circuit, not in the outlet you started at.

schedule5 min savingsusually free

visibilityHow to check

  1. Was it raining, humid, or freezing-then-thawing recently, or did the outlet get sprayed or washed near? Outdoor, bathroom, garage, and laundry outlets are the usual damp suspects.
  2. Turn off the circuit breaker for the outlet before touching the cover — wet electrical parts and live power don't mix.
  3. Look at the outlet and its weatherproof (bubble) cover: standing water, fogged condensation inside, a cover propped open, or a cracked or missing gasket all point to moisture as the cause.
buildNo tools schedule10 min

handymanHow to fix it

warning Power off before you open a wet boxWater plus live 120 V at an outlet is a real shock hazard. Turn the circuit breaker off before removing the cover or touching the device, and don't press RESET until everything is dry. If the outlet keeps re-wetting no matter what you do, or the box shows corrosion or scorching inside, stop and have an electrician sort the weatherproofing and the wiring.

With the breaker off, let the box and outlet dry completely — often a full day, longer in cold weather; a fan aimed at an open, powered-off box helps. Restore power and try RESET only once everything is dry. Then fix why water got in: close and latch the in-use weatherproof cover, or replace a cracked cover or perished gasket so it doesn't recur.

  1. Leave the breaker off. Do not press RESET while anything is visibly wet — you'd only re-trip it and risk a shock at the face.
  2. Open the cover, wipe out standing water, and let the box and device air-dry fully. Warm, moving air speeds it; do not use an open flame or apply heat to the plastic.
  3. Once dry, restore power and press RESET. It should now hold.
  4. Prevent the repeat: fit a proper in-use ("bubble") weatherproof cover outdoors, replace a cracked cover or hardened gasket, and make sure the cover actually closes over plugged-in cords.
schedule30 min savings$0–25

visibilityHow to check

  1. Run the elimination: everything on the circuit unplugged, the box confirmed dry, any upstream GFCI reset, and no sign of recent wiring work.
  2. Press and hold RESET firmly. A worn device gives it away — the button won't stay in at all, or clicks and releases immediately with nothing plugged in and no fault present.
  3. Factor in age and exposure: a GFCI roughly 10–15 years old, or one that's lived outdoors through Canadian winters, is a plausible worn-out device even when nothing else is wrong.
buildNo tools schedule10 min

handymanHow to fix it — where your province allows

report Prove it's dead, and keep LINE and LOAD straightTurn off the breaker and verify at the outlet with a non-contact voltage tester — both halves — before you start. No tester, no job. The one step that makes a GFCI swap different from a plain outlet: the incoming feed must land on the LINE terminals and any protected outlets on LOAD. Reverse them and the new GFCI won't reset, or worse, will reset while leaving downstream outlets unprotected. And never solve a stubborn GFCI by installing a standard receptacle — that strips the protection the code requires here. Check the legal note for your province: in Quebec this is licensed work, and in Ontario it generally needs an ESA notification. If any of this is more than you signed up for, it's a fast, inexpensive visit for an electrician.

Replace like-for-like with a CSA-certified GFCI receptacle of the same amperage (tamper-resistant, and weather-resistant if it's outdoors — both current Canadian Electrical Code expectations for those locations), wiring the feed to LINE and any protected outlets to LOAD exactly as the old one was. Prove the circuit dead first, keep the LINE/LOAD pairs straight, and check the legal note for your province before starting. Never substitute a standard outlet for the GFCI.

  1. Turn off the breaker and prove the outlet dead with a non-contact voltage tester — both halves — before touching a screw.
  2. Photograph the wiring, then note which wires land on LINE (the incoming feed) and which on LOAD (outlets protected downstream). Getting this pair right is the whole job — mixing them up leaves downstream outlets unprotected.
  3. Fit the new GFCI: feed to LINE, downstream to LOAD, ground to green, wiring under the screw terminals. Match amperage and choose tamper-resistant (and weather-resistant outdoors).
  4. Restore power, press RESET, and confirm protection with a plug-in GFCI tester — pressing its test button should trip the outlet. If it won't trip on test, stop and call an electrician; the protection isn't working.
schedule40 min savings$20–45
Non-contact voltage testerAny CSA-certified tester; check it on an outlet you know is live first, so you know it works Plug-in GFCI outlet testerA simple plug-in tester with a GFCI test button, to confirm the new device actually trips and protects downstream 15 A tamper-resistant (TR) GFCI receptacleMatch the amperage marked on the old one (15 A is standard); look for TR marking and CSA certification. Use a weather-resistant (WR) rated GFCI for any outdoor or damp location
gavel Check your province first AB: homeowner may do this · BC: homeowner may do this · ON: permit + inspection required · PE: homeowner may do this · QC: licensed professionals only
National row: like-for-like replacement is generally permitted homeowner work, but the rules are provincial. Any NEW GFCI wiring (not a like-for-like swap) is permit/licensed work. REVIEW: replace with verified per-province rows before publish.

visibilityWhat you can spot yourself

  1. The timing tells the story: a GFCI that won't reset right after a new install, a renovation, or a swap someone just did is a strong sign of line/load reversed — the feed must land on the LINE terminals, and crossing them defeats the reset.
  2. You've already unplugged everything, confirmed the box is dry, and reset any upstream GFCI — and it still won't hold. With the downstream causes ruled out, a wiring error or an internally failed device is what's left.
  3. That's as far as the checking goes without pulling the device and testing live terminals. Note for the electrician exactly what changed recently — it points them straight at the wiring.
buildNo tools schedule15 min

verifiedWhy this one goes to a pro

Sorting a line/load reversal or an internally failed GFCI means pulling the device and identifying LINE versus LOAD on live terminals — get it wrong and the outlet reads protected while none of the downstream outlets actually are, which is how a false sense of safety kills someone in a wet room. An electrician confirms the wiring with a tester in minutes. And to be clear: the answer is never to bypass the GFCI or drop in a standard outlet — that removes the very protection the Canadian Electrical Code requires here. In Quebec this work is reserved to licensed contractors in any case.

Your notes travel with the request — what you saw, what you ruled out, when it started — so the pro arrives with a head start instead of a mystery.

sort

Why the list is in this order

We don’t sort by likelihood alone. We sort the way a good, honest tradesperson thinks: rule out the free, safe, common causes first. That’s why the cheap checks outrank the expensive repairs — and why anything dangerous gets a hard stop instead of a pep talk. The order exists to save you money, not to sell you anything.