Samsung Dishwasher Error Code 4E — Water Supply Error
What this means
The 4E error means the dishwasher is unable to fill with water within the expected time. This is usually caused by a closed water supply valve, kinked supply hose, or clogged inlet filter.
Alternate codes: 4C
Step-by-step fix
3 stepsCheck the water supply valve
Locate the water supply valve under the kitchen sink (usually on the hot water line). Make sure it's fully open — turn counterclockwise.
Some dishwashers connect to hot water, others to cold. Check your installation manual.
Inspect the supply hose
Check the hose running from the supply valve to the dishwasher for kinks, bends, or damage. Straighten any kinks.
The supply hose is usually accessible under the sink or behind the dishwasher's kick plate.
Clean the inlet filter
Where the supply hose connects to the dishwasher's inlet valve, there's a small mesh filter screen. Turn off the water supply, disconnect the hose, and rinse the screen clean.
Sediment and mineral deposits from hard water are the most common cause of clogged inlet filters.
When to call a professional
If water supply, hose, and filter are all fine but the dishwasher still won't fill, the water inlet valve solenoid 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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