6-4
KitchenAid
Float Switch Stuck Open
Service code 6-4 (6.4) indicates float switch open; dishwasher thinks it is overfilled even when empty.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Debris under float, stuck float mechanism, failed float switch, wiring issue to float switch
How to Fix / Troubleshooting
Safety First: Disconnect power.
Inspect float:
- Locate the float inside the tub (usually a small dome or cylinder on the floor).
- Lift and drop it; it should move freely and click the switch.
- Remove any debris or scale around the float.
Check switch and wiring:
- Access the float switch from below or behind the toe panel.
- Inspect wiring and connector; reseat if loose.
- If the switch does not change state when the float moves, replace the float switch assembly.
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Repair Difficulty
Medium
3/5
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