Quick answer
Turn off power at the breaker. Press the reset button on the GFCI outlet. If it won't reset, replace the outlet or check for wiring issues.
Confirm the symptom
- GFCI outlet is tripped and won't reset
- GFCI outlet resets but trips immediately
- GFCI outlet works then trips when you plug in a device
- GFCI outlet has no power or feels warm
Tools and prep
- Voltage tester or multimeter
- Replacement GFCI outlet (same amperage)
- Screwdrivers (flathead and Phillips)
- Needle-nose pliers
- Wire stripper
- Work gloves and safety glasses
- Turn off power at the circuit breaker before starting
Step-by-step troubleshooting
- Check Power SourceDo: Verify the circuit breaker is on and supplying power.Observe: Breaker is tripped or outlet has no power.Means: Power issue at the breaker or wiring.Next: Reset the breaker and test the outlet.
- Reset the GFCI OutletDo: Press the reset button on the outlet until it clicks.Observe: Outlet resets and stays on.Means: Outlet was tripped due to a temporary fault.Next: Test the outlet with a device.
- Test the OutletDo: Plug in a known working device and turn it on.Observe: Device works without tripping the outlet.Means: Outlet is functioning correctly.Next: Monitor for future issues.
- Inspect for DamageDo: Check the outlet for burn marks, discoloration, or loose wires.Observe: Visible damage or loose connections.Means: Outlet or wiring is damaged.Next: Replace the outlet or tighten connections.
- Test with a MultimeterDo: Use a multimeter to check for consistent voltage.Observe: Voltage is inconsistent or absent.Means: Wiring issue or faulty outlet.Next: Replace the outlet or consult an electrician.
- Replace the OutletDo: Turn off power, remove the old outlet, and install the new GFCI outlet following manufacturer instructions.Observe: New outlet works and stays reset.Means: Faulty outlet was the issue.Next: Test the new outlet thoroughly.
Common causes
| Cause | Likelihood | Difficulty | Part often needed |
|---|---|---|---|
| Faulty GFCI Outlet Internal components wear out over time. | Common | Easy–Medium | GFCI outlet |
| Tripped Due to Ground Fault Moisture, damaged appliance, or wiring issues cause a ground fault. | Common | Easy–Medium | None (reset or identify source) |
| Loose or Damaged Wiring Loose connections or damaged wires disrupt current flow. | Sometimes | Medium | Wire connectors or electrician |
| Overloaded Circuit Too many devices drawing power at once. | Sometimes | Easy | None (unplug devices) |
| Moisture Exposure Water near the outlet triggers a ground fault. | Sometimes | Easy | None (dry area) |
| Faulty Appliance A damaged device causes a ground fault when plugged in. | Sometimes | Easy | None (unplug device) |
| Wiring Error During Installation Incorrect wiring during installation or repair. | Rare | Hard | Electrician |
| Aging Electrical System Old wiring or outlets degrade over decades. | Rare | Hard | Electrician |
Parts matching
Choose a replacement GFCI outlet that matches your existing one in size, amperage, and style.
- Check the amperage rating (usually 15A or 20A) on the old outlet
- Match the number of receptacles (single, duplex, etc.)
- Select a weather-resistant model for outdoor use
- Choose a tamper-resistant outlet for homes with children
- Ensure the new outlet is UL-listed for safety
- Use a GFCI breaker if multiple outlets need protection
If unsure, purchase a standard 15A GFCI outlet for most indoor outlets and a 20A model for kitchen or workshop circuits.
When to call a professional
- The outlet continues to trip after replacement
- You smell burning or see sparks
- Multiple outlets on the same circuit are affected
- You're uncomfortable working with electrical wiring
- The issue involves outdoor or underground wiring
- The home's electrical system is old or unmodified since the 1960s
FAQ
Can I reset a GFCI outlet multiple times?
Yes, but frequent tripping indicates an underlying issue like a ground fault or faulty appliance. Investigate the cause instead of just resetting.
Why does my GFCI outlet trip when I turn on a light?
A ground fault in the lighting circuit or a faulty switch may be causing the trip. Check the wiring or consult an electrician.
Do all outlets need to be GFCI?
GFCI protection is required in kitchens, bathrooms, garages, and outdoor areas by electrical codes. Other areas may need it based on usage or local codes.
Can a GFCI outlet protect multiple outlets?
Yes, a GFCI outlet can protect downstream outlets wired after it. However, only the first outlet needs to be a GFCI; downstream ones can be standard.
How long do GFCI outlets last?
GFCI outlets typically last 10–15 years. Test them monthly and replace if they fail to reset or trip frequently.