5 Tips for troubleshooting a GFCI outlet

5 Tips for Troubleshooting a GFCI Outlet

Almost 400 people get electrocuted in their homes each year – about half of which are fatal. Ground fault circuit interrupters help mitigate potential harm by stopping electrical flow when it senses a deviation in current.

Ground Fault Circuit Interrupter (GFCI) outlets play a crucial role in enhancing electrical safety within our homes and workplaces. These outlets are designed to protect us from electrical shocks and potential hazards caused by ground faults or short circuits.

However, like any electrical component, GFCI outlets can encounter problems over time. Troubleshooting these issues is essential to ensure the continued safety of your electrical system.

In this article, we’ll explore five tips for troubleshooting a GFCI outlet plus go over some frequently asked questions at the end.

5 Tips for Troubleshooting a GFCI Outlet

Image of electrician troubleshooting loose connections on one gfci outlet.

1. Understanding GFCI Outlets

Before delving into troubleshooting, it’s important to have a basic understanding of how GFCI outlets work.

A GFCI outlet monitors the flow of electrical current between the hot and neutral wires. If there’s an imbalance of more than a few milliamps, indicating a leakage of current to ground, the GFCI outlet trips, cutting off the power supply.

This rapid response helps prevent electrical shocks and fires.

2. Check for Tripped GFCI Outlet

One of the most common issues with GFCI outlets is tripping. If a GFCI outlet has tripped, it means it has detected a ground fault and has shut off the power supply. Before proceeding with further troubleshooting steps, check if the GFCI outlet has tripped.

This can be identified by the presence of a “Test” and “Reset” button on the outlet. The “Reset” button should be pressed to restore power. If it doesn’t stay reset, there might still be an issue causing the GFCI to trip.

3. Test Other Outlets on the Circuit

One of the best ways to test an electrical outlet is by using a digital multimeter. GFCI outlets are often connected in a series, so if one outlet trips, it can affect the others downstream. If you have multiple GFCI outlets on the same circuit, check if any of the others have tripped as well.

Even regular outlets downstream from a tripped GFCI outlet can lose power. Press the “Test” button on all GFCI outlets and then reset them to ensure they’re working correctly.

4. Identify and Address Possible Causes

Several factors can cause a GFCI outlet to trip or malfunction:

Ground Fault: If water or moisture comes into contact with the outlet, it can create a ground fault. Ensure the GFCI outlet is properly installed in areas where water is present, such as bathrooms, kitchens, and outdoor areas. Check for leaks or dampness that might be causing the ground fault.

Faulty Wiring: Incorrect or damaged wiring can lead to false trips or GFCI malfunction. Inspect the wiring connections to ensure they’re secure and properly connected. If you’re not experienced with electrical work, it’s recommended to seek the assistance of a qualified electrician.

Overloading: Overloading the circuit by connecting too many appliances can also cause the GFCI outlet to trip. Make sure you’re not exceeding the recommended load for the circuit.

Defective Appliances: Faulty appliances with damaged cords or internal wiring can cause GFCI trips. Disconnect all devices from the outlet and attempt to reset it. Gradually reconnect the devices to identify the one causing the trip.

5. Replace a Faulty GFCI Outlet

If you’ve gone through the above steps and the GFCI outlet still doesn’t work or keeps tripping, it might be time to replace it. Over time, GFCI outlets can wear out or become less sensitive to ground faults. To replace a GFCI outlet:

  1. Turn off the power to the outlet at the circuit breaker.
  2. Remove the outlet cover plate and unscrew the outlet from the junction box.
  3. Carefully disconnect the wires from the old outlet, making note of their positions.
  4. Connect the wires to the corresponding terminals on the new GFCI outlet.
  5. Secure the new outlet back into the junction box, screw on the cover plate, and restore power at the circuit breaker.

Remember, electrical work can be dangerous if not done correctly. If you’re not confident in your abilities, it’s safer to seek expert advice to replace the outlet for you. This will ensure it is replaced to the applicable electrical code.

Frequently Asked Questions (FAQs)

Image of loose wires through a wall location where an appliance may be plugged.

How to RESET GFCI outlet?

If the GFCI has tripped, the “Reset” button will be popped out. Press the button firmly. You may feel some resistance when pushing it back in.

Why won’t my GFCI outlet RESET?

The GFCI outlet won’t reset if it detects a ground fault. Before attempting to reset the GFCI, unplug all devices connected to the outlet. Press the “Reset” button again and see if it stays in. If it doesn’t, there may be a wiring issue or a faulty device connected to the circuit.

Do all GFCI outlets have RESET buttons?

Yes, almost all GFCI (Ground Fault Circuit Interrupter) outlets have both a “Test” and “Reset” buttons.

How do you know if a GFCI outlet is bad?

Some common symptoms that its time to replace your GFCI outlet:

  1. Failure to reset. If the GFCI outlet repeatedly trips and cannot be reset, this could indicate an electrical problem.
  2. No voltage at output. Check this with a digital multimeter.
  3. Test and Reset buttons not working. If the “Test” and “Reset” buttons on the GFCI outlet do not respond when pressed, it could indicate a problem with the internal mechanism.
  4. GFCI trips without a load connected to it. If the GFCI trips without any devices plugged in or turned on, there may be a wiring issue or a fault in the GFCI itself.
  5. Visual inspection. Inspect the GFCI outlet for any signs of damage, such as burn marks, discoloration, or visible wear. Damaged outlets should be replaced.

How do you fix a GFCI outlet that won’t reset?

Press the TEST button on the GFCI. This should cause the RESET button to pop out. If the TEST button doesn’t trip the GFCI, it may be faulty and need replacement.

What happens when a GFCI won’t reset?

If a GFCI won’t reset you won’t have any voltage present at the output, effectively you will have a dead outlet. This can be easily tested with a voltage meter. Any nearby outlets wired on the load side of the GFCI will also have no voltage.

Is it safe to press reset button on outlet?

Pressing the reset button on a GFCI (Ground Fault Circuit Interrupter) outlet is generally safe and is a standard part of maintaining electrical safety in your home. The reset button is designed for the specific purpose of restoring power to the outlet after it has been tripped.

What happens when a GFCI breaker won’t RESET?

Image showing how one might reset a gfci outlet from a tripped breaker.

The GFCI breaker will be located in the circuit breaker box. If the breaker won’t reset it’s likely due to a ground fault still present in the circuit. Other reasons you could have a tripped breaker are as follows:

  1. Overloaded Circuit. GFCI breakers can trip if the circuit is overloaded. Ensure that the circuit is not overloaded by unplugging devices and appliances from the outlets. Press the reset button on the GFCI breaker after doing this.
  2. Faulty GFCI circuit breaker. GFCI circuit breakers can wear out or become faulty over time. If the breaker won’t reset even after eliminating possible ground faults or overloads, it may be necessary to replace the breaker.
  3. Internal component failure. Like any electrical component, GFCI breakers can experience internal failures. If the internal components are damaged or worn out, the breaker may not function correctly. Open the breaker box to inspect further.
  4. Wiring problems. Problems with the wiring connected to the GFCI circuit breaker can prevent it from resetting. Inspect the breaker box wiring for any visible signs of damage or loose wires. If you’re not experienced with electrical work, consult with a professional.
  5. Water intrusion. GFCI circuit breakers are commonly used in areas where water is present. If water has entered the electrical panel or the breaker itself, it can cause malfunctions. Ensure that the area is dry before attempting to reset the GFCI breaker.

Why won’t my GFCI RESET button push in?

The GFCI won’t reset if it still detects a ground fault in the circuit. Ensure that all devices are unplugged from the GFCI-protected outlets and try pressing the RESET button again. If this doesn’t work the GFCI could be faulty.

How do you fix a GFCI circuit breaker that won’t RESET?

If your GFCI circuit breaker won’t reset after trying all the steps listed above, its time to open the circuit breaker box and consider replacing it. This should be done by a trained professional, however, if you have electrical experience we recommend shutting of the main breaker to do so.

Will flipping a breaker reset GFCI?

Flipping the circuit breaker associated with a GFCI (Ground Fault Circuit Interrupter) outlet or circuit will essentially have the same effect as pressing the RESET button on the GFCI. It resets the circuit and restores power to the outlets on that circuit. Locate the breaker feeding your GFCI inside your electrical box and flip it to the OFF position. Wait a moment, and then turn the breaker back ON.


GFCI outlets are integral to maintaining electrical safety in our homes and workplaces. Troubleshooting issues with these outlets is a crucial task that ensures the proper functioning of our electrical systems and protects us from potential hazards.

By understanding the basics of GFCI operation, checking for tripped outlets, testing other outlets on the circuit, identifying and addressing possible causes, and replacing faulty outlets when necessary, you can maintain a safe and reliable electrical environment.

If you encounter complex or recurring problems, it’s always best to consult a professional electrician to ensure the safety of both you and your property.