Written by
Nadia Okafor Appliance Care EditorPublished October 26, 2026
VERIFIED
Error code4C, 4E
ApplianceDishwasher
A water supply fault
Seen as 4C or 4E, this error reports that incoming water arrives at the wrong pressure or temperature, or not at all. For the requirements themselves, Samsung’s US guide refers owners to its dishwasher water supply requirements guide. Australian, UAE and Indian pages contribute brief checks of their own.
Where to look
The shutoff valve on the supply line: shut, or opened only part way?
The supply itself: interrupted by maintenance or a utility issue?
The fill valve plus its hose or line: iced up, or clogged with foreign objects?
India’s page treats 4E as an installation matter, namely a shutoff that is closed or not fully open.
Related codes
4C5: the machine starts to fill, then stops with a dry tub.
When 4C persists on a Samsung dishwasher in San Francisco, call (415) 969-6153 or look over Samsung dishwasher repair. Say what the supply valve looked like and which code appeared on the display.
Model compatibility: Samsung reuses codes across series and model years, so 4C, 4E may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
4C (4E) is a water supply error: the dishwasher lacks water at the needed pressure or temperature.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
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