Samsung · Dishwasher Moderate

4C5 — / 4E5 — Fill timeout with dry tub

The dishwasher attempted to fill but the float / level sensor never detected water in the tub. Cycle aborts early.

Keep using it?
Yes, with caution
DIY difficulty
Moderate
Verified against
samsung.com ↗

How to fix it

  1. Confirm the water supply valve under the sink is fully open and the fill hose isn't kinked.
  2. Listen at the start of a cycle — a 4C5 with no valve click usually means the valve isn't being energized.
  3. Power off, pull the kick plate, and check the case/float switch — it should be DOWN with the tub empty.
  4. Test the inlet valve solenoid for ~500–1500 ohms; replace if open.
  5. If valve and float are good, check harness continuity to the main control board.

Why it happens

Typical signs: 4C5 or 4E5 on display · Tub remains dry after cycle start · No fill sound · Cycle ends in a few minutes

  • Water inlet valve not opening Solenoid coil failed or no voltage from the control board.
  • Closed supply valve House shutoff or angle stop closed.
  • Faulty case (float) switch Float stuck up signals 'full' so the valve never energizes.
  • Wiring fault to inlet valve Open or shorted harness between control and valve.

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.

  • Samsung dishwasher water inlet valve Common replacement
    Amazon →
  • Samsung dishwasher case float switch Common replacement
    Amazon →

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 4C 4C / 4E — Water Supply Error 5C 5C / 5E — Drain Error

All Samsung codes → All dishwasher codes →

Frequently asked questions

What does the 4C5 code mean on a Samsung dishwasher?

The dishwasher attempted to fill but the float / level sensor never detected water in the tub. Cycle aborts early.

What causes the 4C5 code on a Samsung dishwasher?

Water inlet valve not opening: Solenoid coil failed or no voltage from the control board. Closed supply valve: House shutoff or angle stop closed. Faulty case (float) switch: Float stuck up signals 'full' so the valve never energizes.

Is it safe to keep using a Samsung dishwasher with a 4C5 error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix 4C5 on a Samsung dishwasher?

Confirm the water supply valve under the sink is fully open and the fill hose isn't kinked. Listen at the start of a cycle — a 4C5 with no valve click usually means the valve isn't being energized. Power off, pull the kick plate, and check the case/float switch — it should be DOWN with the tub empty.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: samsung.com.