4C Moderate Easy DIY

Samsung Dishwasher 4C / 4E — Water Supply Error

Samsung Dishwasher · Error code 4C

What 4C Means

The 4C (older 4E) code means the dishwasher is not getting water at the expected rate during fill.

Symptoms

  • Dishwasher will not fill
  • Cycle stalls at the start
  • 4C or 4E on the display

Common Causes

1
Supply valve closed or low pressure

The under-sink supply must be fully open.

2
Clogged inlet screen

Sediment in the inlet valve mesh.

3
Faulty inlet valve

A valve that will not open.

How to Fix It

  1. Confirm the under-sink supply valve is open with good pressure.
  2. Clean the inlet valve screen.
  3. Test and replace the inlet valve if needed.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Samsung Dishwasher Water Inlet Valve View on Amazon→

Related Repair Guides

Dishwasher Not Filling With Water — Causes and Fixes →

More Samsung Dishwasher Codes

1C 1C — Low water level / fails to start 1E 1E / IE — Filter clogged / heater fault 3C 3C Error — Wash Pump Failure 3E 3E — Hot water supply too hot 4C5 4C5 / 4E5 — Fill timeout with dry tub 5C 5C / 5E — Drain Error

All Samsung codes → All dishwasher codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.