Vertical pressure tank connected to a water pump outdoors
Generic photo: W.carter · CC BY-SA 4.0

Dishwasher overfills or keeps filling (water near the door or on the floor)

Normal fill is only an inch or two in the sump area. Overfill is either the inlet valve not closing (debris, scale, failed valve) or the control not being told to stop (float stuck or float switch failed, flow meter fault). Separate them by cutting power while it is overfilling. Suds can also look like overfill; rule them out first.

Cross-checked ~45 min moderateBrands: All

Before you start

  • Shut off the dishwasher water supply valve first
  • Turn off the breaker before removing the toe panel; water and 120 V are both under the tub

Diagnostic steps

Unlock all 5 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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Dishwasher overfills or keeps filling (water near the door or on the floor) · OnCall Tech