A dead outlet is usually a small problem with a simple cause: a tripped ground-fault outlet somewhere else in the house, a breaker that tripped, or a worn receptacle that has lost its grip. Occasionally it is the first sign of a loose connection that is heating up behind the wall, which is why a warm, discolored or buzzing outlet should not be ignored.
This guide covers the common reasons an outlet stops working, what you can check safely without removing a cover or touching wiring, the signs that mean call today, and what an electrician does on the visit.
What you notice
- Nothing plugged into the outlet gets power, while other outlets in the room work.
- Several outlets in one area, often a bathroom, kitchen, garage or outdoors, all stopped at once.
- A plug falls out easily or has to be wiggled to make contact.
- The outlet works sometimes and not others.
- The outlet or its cover is warm, discolored, cracked or makes a buzzing or crackling sound.
- A small reset button on the outlet, or on another outlet nearby, has popped out.
Likely causes
A tripped GFCI
Ground-fault circuit interrupters protect outlets near water. One GFCI often protects several ordinary-looking outlets downstream, so a tripped GFCI in a bathroom can kill an outlet in a garage or on the patio. It trips on moisture, a faulty appliance or simply age.
A tripped breaker
If an outlet and the rest of its circuit are dead, the breaker has likely tripped from an overload, a short or a failing appliance. A tripped handle often sits between on and off and can be easy to miss.
A worn or damaged receptacle
The spring contacts inside an outlet loosen after years of plugging and unplugging. Plugs fall out, contact gets intermittent, and heat builds. Receptacles are inexpensive and electricians replace them routinely.
A loose connection or backstabbed wire
Many outlets are wired by pushing the wire into a spring clip on the back. Those clips loosen over time, which can cut power to everything downstream and create heat at the connection. This is a leading cause of an outlet that is dead with no breaker tripped.
A switched outlet
In many living rooms and bedrooms, one half of an outlet is controlled by a wall switch meant for a lamp. If a switch near the door seems to do nothing, it may control that outlet.
Aluminum wiring or old wiring methods
Homes wired with aluminum branch circuits in the 1960s and 1970s are prone to loose, overheating connections at outlets. Older cloth-insulated or ungrounded wiring has its own failure modes. Both call for an electrician rather than a part swap.
Safe things to check before anyone comes out
- Plug a lamp or phone charger that you know works into the outlet to confirm it is the outlet and not the device.
- Look for outlets with test and reset buttons in the bathrooms, kitchen, garage, basement and outdoors. If a reset button is popped out, press it once. That is what it is for.
- Look at the breaker panel door without opening any cover. If a handle sits in the middle or is clearly off and nothing smells hot, note which one. One reset is reasonable; if it trips again, leave it off.
- Try nearby wall switches to see if the outlet is switch-controlled.
- Look at and feel the outlet cover from the outside. Warmth, discoloration, a melted spot or a buzz means stop using it and do not reset anything.
- Note what was plugged in when it stopped working and whether anything else in the house went off at the same time.
When to stop and call
- There is smoke, sparking, a burning smell or anyone has received a shock from the outlet. Keep away from it; if there is any sign of fire, leave the house and call emergency services. Do not reset breakers.
- The outlet or its cover is hot, melted or discolored. Stop using it and do not plug anything in.
- A breaker trips again immediately after one reset, or a GFCI will not stay reset.
- An outlet near water is dead and water may have reached it.
- Lights dim or flicker across the house when the outlet or an appliance is used.
What the technician does
- Confirms the outlet is dead and maps which other outlets and lights are affected to find the circuit and any upstream GFCI.
- Checks the panel for a tripped or weak breaker and tests the circuit for a short or ground fault before restoring power.
- Turns off the circuit, removes the cover and inspects the receptacle and the connections behind it and at the outlets upstream.
- Replaces a worn, damaged or backstabbed receptacle, moves wires to the screw terminals, and replaces a GFCI that no longer resets.
- Checks for aluminum wiring, missing grounds or scorching, and explains any larger problem found while the box is open.
- Restores power, tests the outlet and any GFCI protection, and labels the breaker if it was not already.
What it usually costs
Diagnosing a dead outlet and replacing a receptacle or GFCI is usually a flat or hourly charge in the low to mid hundreds of dollars, including the part. Tracing a loose connection through several outlets takes longer. If the visit reveals aluminum wiring, a failed breaker or a panel problem, that is quoted separately. The estimate should be explained before any work starts, including any trip or diagnostic fee.
What moves the estimate
- Whether the fix is a single receptacle or a connection somewhere upstream that has to be found.
- GFCI, tamper-resistant and weather-resistant receptacles cost more than standard ones.
- Wiring type and age. Aluminum or ungrounded wiring needs specific repair methods.
- Access: finished walls versus an exposed basement.
- Urgency. Same-day and after-hours visits usually carry a higher rate.
Keeping it from coming back
- Press the test button on each GFCI once a month and make sure it trips and resets. GFCIs wear out and should be replaced when they fail the test.
- Replace any outlet that no longer grips a plug firmly. Loose contacts build heat.
- Avoid running space heaters, window air conditioners or other high-draw appliances through power strips or on crowded circuits.
- Use tamper-resistant outlets in homes with small children; they are standard in new construction.
- Have the electrical system inspected if the home is decades old, has aluminum wiring, or has never had GFCI protection added near water.
Questions people ask
Can I replace the outlet myself?
Replacing a receptacle is a common do-it-yourself job, but it involves working inside a box with wiring that can be live if the wrong breaker is off. If the outlet was dead with no breaker tripped, there is likely a loose connection upstream that a swap will not fix. An electrician finds the cause.
Why does my bathroom outlet reset button keep popping?
A GFCI trips on a small leakage of current. A hair dryer or heater with a fault, moisture in an outdoor box on the same circuit, or a GFCI that has simply worn out are the usual reasons. If it trips with nothing plugged in, it needs attention.
Is an outlet that works intermittently dangerous?
It can be. Intermittent contact means a loose connection, and loose connections generate heat. Stop using it for anything that draws much power and have it checked.
Do I need a permit to replace an outlet?
Usually not for a like-for-like replacement, but rules vary by jurisdiction. Adding circuits, moving outlets or correcting wiring problems may require one. A licensed electrician will know the local rule.
Sources
- U.S. CPSC: Ground fault circuit interrupters www.cpsc.gov
- NFPA: Electrical home fire safety www.nfpa.org