Dishwasher displays F4E2 and may overfill, leak, or stop with water remaining in the tub.

Safety first: Disconnect power and avoid running the unit if it is overfilling or leaking.

• Check float movement: Open the door and locate the float (usually a small dome or tower in the tub bottom). Lift it up and down; it should move freely and click the switch.
• Clean around float: Remove any food debris, plastic, or utensils that may be wedged under the float.
• Test float switch: Access the float switch from beneath the tub or behind the toe-kick. Disconnect the wires and test for continuity while moving the float. The switch should open and close reliably.
• Inspect drain hose routing: Ensure the drain hose has a high loop or air gap to prevent siphoning, which can confuse water level sensing.

Repair action: Replace the float switch if it does not change state when the float moves. If the float mechanism is damaged, replace the float assembly.