Whirlpool Dishwasher Error Code F4 E2 — Water Supply Error (Low Fill)
What this means
The F4 E2 error code on Whirlpool dishwashers indicates the unit is not filling with enough water. The control board monitors the water level during the fill phase and if insufficient water enters within the expected time, this code appears. Common causes include a closed water supply valve, a kinked supply line, a clogged inlet screen, or a faulty water inlet valve.
Alternate codes: F4E2
Step-by-step fix
4 stepsCheck the water supply valve
Locate the water supply shutoff valve under the kitchen sink (usually on the hot water line). Ensure it is fully open. Turn it off and on to verify it operates.
If the valve is old and stiff, it may be partially closed without appearing so. Try opening it further or replace the valve.
Inspect the water supply line
Check the water supply hose from the shutoff valve to the dishwasher for kinks, crimps, or sharp bends that could restrict flow. Straighten any kinks found.
Braided stainless steel supply lines are less prone to kinking than rubber hoses.
Clean the water inlet valve screen
Turn off the water supply. Disconnect the supply line where it connects to the dishwasher inlet valve (bottom left of the unit). Remove the small mesh screen inside the valve inlet. Clean sediment and debris with a small brush under running water.
Hard water areas are especially prone to mineral buildup on the inlet screen. Consider adding a water line filter.
Test and replace the water inlet valve
If the screen is clean and water pressure is good, test the inlet valve with a multimeter. Disconnect the valve wires and measure resistance — it should read 300–2,000 ohms. If open (no reading), replace the valve.
The inlet valve is an electromagnetic solenoid — it either works or it does not. There is no partial failure mode.
When to call a professional
If the water supply, line, screen, and inlet valve all check out, the control board's fill valve relay may be faulty.
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.
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