How to Fix a Garbage Disposal That Stopped Working

Most garbage disposal problems stem from electrical issues, jams, or overheating that can be fixed by checking power connections, clearing blockages, and resetting the unit.

  1. Confirm Power Reaches the Unit. Start with the basics before diving into mechanical issues. Make sure the disposal is plugged in securely under the sink. Check if the wall switch is working by testing it with another appliance. Look for a tripped circuit breaker in your electrical panel and reset it if necessary. Many disposal units also have a reset button on the bottom - press this red or black button firmly and hold for a few seconds.
  2. Extract Visible Debris First. Turn off power at the circuit breaker and unplug the unit. Use a flashlight to look down into the disposal chamber. Remove any visible debris like utensils, bones, or large food chunks using tongs or pliers - never use your hands. Run cold water and try the disposal again. If it still won't turn, there's likely a jam deeper in the mechanism.
  3. Unlock the Jammed Flywheel. With power still off, insert an allen wrench or disposal wrench into the hex-shaped hole at the bottom of the unit. Turn the wrench back and forth to manually rotate the flywheel and break up any jam. You should feel resistance initially, then easier movement as the jam clears. If your unit doesn't have a hex hole, use a wooden spoon handle to carefully turn the blades from above while looking down with a flashlight.
  4. Verify Full Operation Restored. After clearing the jam, press the reset button again and restore power. Run cold water and turn on the disposal for a few seconds. It should hum and spin freely. If you hear grinding or the motor strains, turn it off immediately and check for remaining debris. Run cold water for 30 seconds after the disposal turns off to flush everything through the pipes.
  5. Know When to Replace. If the disposal still won't start, check for loose wiring connections where the power cord meets the unit. Ensure wire nuts are tight and connections are secure. A disposal that hums but won't turn likely has a burned-out motor and needs replacement. If water leaks from the bottom, the internal seals have failed and replacement is more cost-effective than repair.