KitchenAid Dishwasher Error Code F6E4 — Float Switch Open
What this means
Error code F6E4 indicates the overfill float switch is stuck in the raised (open) position, signaling an overfill condition even when the water level is normal. This can be caused by debris under the float assembly preventing it from dropping, a stuck float mechanism, or a faulty float switch. The dishwasher will not fill with water while this error is active as a flood protection measure.
Alternate codes: F6 E4, 6-4
Step-by-step fix
4 stepsLocate the overfill float
Open the dishwasher door and look in the front-left corner of the tub floor. The float is a small dome or cylinder that moves up and down freely.
Remove the lower dish rack for better access.
Check for obstructions
Lift the float and check underneath for food debris, broken glass, or utensils that may be preventing the float from sitting in the down position.
Use a flashlight to see clearly under the float. Small items like toothpicks or labels often get trapped here.
Clean the float assembly
Remove any debris found and gently push the float up and down several times to ensure it moves freely. Clean the area with a damp cloth.
The float should drop back down freely under its own weight when released.
Test the dishwasher
Close the door and start a wash cycle. If the error clears and water fills normally, the issue is resolved. If the error persists, the float switch may need replacement.
If the float moves freely but the error persists, the micro switch underneath the tub may be faulty.
When to call a professional
If the float moves freely but the error continues, the float micro switch or wiring may be faulty. Professional service is recommended for accessing and replacing under-tub components.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Float Switch Assembly
Part #WPW10195039 · $15–$30
Required if float switch is stuck or defective
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