Half Outlet Not Working
If only one half of an outlet works, the receptacle may be switched, the tab may be split, or the device may have a loose or failed connection.
Quick Answer
A half-working outlet often points to how that receptacle was wired, not just whether it has power. One half may be controlled by a wall switch, or the outlet may have a failed internal connection on one side.
Common Causes
- One half of the outlet may be controlled by a wall switch.
- The outlet may be a split receptacle with one side wired differently from the other.
- A loose connection or worn device may be affecting only one half of the outlet.
- The metal tab or internal contact inside the receptacle may be damaged.
What to Check First
- Check nearby wall switches to see whether one of them controls the dead half of the receptacle.
- Plug the same device into the working half and then into a known good outlet to make sure the device itself is fine.
- Test whether the nonworking half has always been that way or stopped recently, which can help narrow down whether the outlet is failing.
- Check the breaker and nearby GFCI outlets if the outlet behavior changed suddenly.
Quick summary
A half-working outlet often points to how that receptacle was wired, not just whether it has power. One half may be controlled by a wall switch, or the outlet may have a failed internal connection on one side.
If you are only checking whether the device has power, a voltage tester is the safer first tool. A multimeter can help with a deeper check if you already know how to use one safely.
Common causes
One half of the outlet may be controlled by a wall switch.
The outlet may be a split receptacle with one side wired differently from the other.
A loose connection or worn device may be affecting only one half of the outlet.
The metal tab or internal contact inside the receptacle may be damaged.
Safe checks homeowners can do
Check nearby wall switches to see whether one of them controls the dead half of the receptacle.
Plug the same device into the working half and then into a known good outlet to make sure the device itself is fine.
Test whether the nonworking half has always been that way or stopped recently, which can help narrow down whether the outlet is failing.
Check the breaker and nearby GFCI outlets if the outlet behavior changed suddenly.
If you're checking this yourself, having the right tools makes troubleshooting much easier. see recommended tools here
When to stop and call an electrician
- Stop if the outlet is warm, loose, cracked, or smells burnt.
- Stop if the working half also starts acting strangely or the circuit seems unstable.
- Call a licensed electrician if the split wiring is unclear or the receptacle likely needs replacement.
Still not sure what's causing it?
If the problem keeps happening, feels unsafe, or you're not comfortable checking it further, it may be time to talk to a licensed electrician.
Find a licensed electrician near youNext step
For step-by-step troubleshooting, see How to Troubleshoot a Dead Outlet.