KitchenAid Dishwasher F6E4 Error Code — What It Means
F6E4 reports that the overfill float switch reads open. This switch is a safety device that stops the fill if water rises too high.
When the float sticks up or the switch fails open, the control sees the tub as overfilled and blocks the cycle. Most cases trace to a stuck float or a bad switch under it.
Common Causes
- Stuck float Debris or warping holds the float in the up position so the switch never closes.
- Failed float switch The microswitch under the float loses continuity and reads open to the control.
- Loose switch wiring A disconnected or corroded plug at the float switch breaks the circuit.
- Actual overfill or leak A genuine overfill from a stuck inlet valve raises real water under the tub and trips the float.
- Foreign object under float A piece of glass or food wedged around the float keeps it from seating down.
Step-by-Step Fix
- Disconnect power before reaching into the tub or under the unit.
- Lift and drop the overfill float to confirm it moves freely, then clear any debris around it.
- Remove the lower access panel and locate the float switch beneath the float.
- Check the switch wiring connector and reseat it if loose.
- Test the float switch for continuity as the float is raised and lowered.
- Replace the float switch if it does not change state, and dry any standing water under the tub.
- Restore power and run a short cycle to confirm the code is gone.
Parts Often Needed
| Part | Notes |
|---|---|
| KitchenAid dishwasher overfill float switch | Amazon | Match the switch to your model since the body shape varies by series. |
| Float and float cap assembly | Amazon | Use if the float itself is warped or cracked. |
When to Call a Pro
If the float moves freely and the switch tests good but F6E4 keeps coming back along with real water under the tub, you likely have a fill or leak problem feeding the float. A technician can find the leak source and check the control board.