What F6E4 means
The water float switch was triggered, often because the dishwasher isn't level.
Also shown as: F6 E4, depending on the model.
Likely causes
- Dishwasher not level
Safe first checks
- Check that the dishwasher is level side to side and front to back.
- Turn the power off for 30 seconds, then back on.
When to stop
If F6E4 returns, schedule service.
Checked against: Whirlpool Product Help: F6E4 dishwasher. Codes can differ by model and year, so confirm with your owner's manual.