A puddle under a dishwasher usually comes from the door seal, wrong detergent, a loose water connection, a cracked hose, or a failing pump or inlet valve. The point in the cycle when it leaks is a useful clue.
This applies to most built-in dishwashers, including GE, Frigidaire, KitchenAid, Maytag, Whirlpool, and similar models.
Does this affect you?
Use this if water appears in front of or below the dishwasher during fill, wash, drain, or after the cycle ends.
Check the door seal and detergent
- Open the door and inspect the rubber gasket around the tub opening.
- Clean grease and food residue from the gasket.
- Look for cracks, stiff spots, or areas pulled out of the track.
- Confirm you used dishwasher detergent, not hand dish soap.
- If dish soap was used, run rinse cycles until suds are gone.
- Check that the dishwasher is level and not tilted forward.
Before doing hands-on checks, turn the dishwasher off at the wall switch or breaker. If you will check hoses or water connections, shut off the water supply too.
- Do only the accessible checks described here.
- Do not work around standing water with power on.
- If the dishwasher is under warranty, smells hot or electrical, leaks heavily, or needs internal door or pump work, call support or an appliance technician.
Check hose connections and the inlet valve
- Remove the lower toe-kick panel with power off.
- Look for drips where the household supply line connects to the water inlet valve.
- Hand-tighten a loose connection gently, without overtightening compression fittings.
- Inspect the drain hose for cracks, especially near bends and the pump.
- Look for corrosion or cracks on the inlet valve body.
- If connections are dry but water appears from the pump or tub, call a technician.
A stuck float can also cause overfilling. Inside the tub, find the small plastic float and make sure it moves freely up and down. Food or a small utensil can wedge it down and let the tub overfill around the door.
A worn drain pump seal often leaks mainly during the drain part of the cycle. That repair usually requires pulling the dishwasher out, so it is beyond the quick user checks.
Sources
- GE Appliances – Dishwasher is Leaking (2025)
- Frigidaire – Dishwasher Leaking From Underneath (2025)
- KitchenAid – Dishwasher Leak Troubleshooting (2024)