Whirlpool dishwasher error code
H20
Not detecting water
The dishwasher is not getting water when it tries to fill.
Also shown on some Whirlpool models as: H2O
Try these free fixes first
Unplug the dishwasher before opening any panel.
- Make sure the water shutoff valve under the sink is fully open.
- Check the water supply hose for kinks.
- Confirm the sink has normal water pressure.
- Restart the cycle after fixing the supply.
Still showing H20?
If the water is on and the code returns, a technician should check the water inlet valve.
Water inlet valveCheck that the part matches your exact model number (usually on a sticker inside the door or on the back).Find the part
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Questions people ask
What does H20 mean on a Whirlpool dishwasher?
H20 on a Whirlpool dishwasher means: not detecting water. The dishwasher is not getting water when it tries to fill.
How do I fix Whirlpool dishwasher error H20?
Make sure the water shutoff valve under the sink is fully open. Check the water supply hose for kinks. Confirm the sink has normal water pressure. Restart the cycle after fixing the supply.
When should I call a repair technician?
If the water is on and the code returns, a technician should check the water inlet valve.
Related dishwasher codes
Samsung 4CDishwasher: Water supply problemSamsung 9EDishwasher: Not enough waterLG IEDishwasher: Not enough water fillingLG FEDishwasher: Too much water in tubBosch E14Dishwasher: Flow meter or fill problemBosch E16Dishwasher: Water filling problemSource: Whirlpool official support · Reviewed 2026-10-01