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Source-backed error-code guide

Reviewed

Samsung Dishwasher 4C / 4E Error Code

4C/4E points to a water-supply condition, not proof that a valve or internal part failed. Safe checks stay with the household supply, visible hose condition, and service boundaries.

Applies to Samsung dishwasher with digital display

What the appliance detected

Detected condition

Samsung identifies 4C and 4E as water supply errors: the dishwasher is not getting water at the pressure or temperature it needs.

What may contribute

Possible causes

  • The dishwasher is not receiving water at the needed pressure or temperature.
  • The water supply may be turned off or restricted.
  • The visible water supply hose may be kinked or blocked.
  • A supply, installation, or internal water-control issue may remain if the code returns.

Start conservatively

Safe preliminary checks

Work in order and stop whenever a step is not supported by the documentation for your model.

  1. Record the code and model

    • Photograph or write down whether the display shows 4C or 4E before clearing it.
    • Confirm the full model number and owner manual because water-supply requirements vary.

  2. Check accessible supply conditions

    • Confirm the water supply valve is open and household water service is available.
    • Visually check the accessible supply hose for kinks, pinching, freezing, or obvious damage without disconnecting plumbing.

  3. Stop before plumbing or internal work

    • If the supply pressure, temperature, valve, or inlet parts may be involved, use a qualified plumber, installer, or appliance technician.
    • Do not reset or clear the code before troubleshooting; Samsung warns the issue may return if the cause is not addressed.

Actions not recommended

  • Do not remove panels, test live voltage, disconnect plumbing, or replace an inlet valve based on 4C or 4E alone.
  • Do not keep running cycles if water is leaking or pooling near electrical parts.
  • Do not ignore the exact model manual when water supply requirements are involved.

When to stop and request service

  • Request Samsung service if 4C or 4E returns after accessible water-supply checks.
  • Use a qualified plumber for supply pressure, frozen supply, or plumbing work.
  • Stop immediately for leaks, electrical warning signs, or any step that requires internal access.

Documented source

Official information reviewed

Our summary is based on manufacturer support material and stays within the limits of that material.

Source reviewed by Appliance Help HQ: August 17, 2026.

Appliance Help HQ is an independent informational site and is not affiliated with or endorsed by Samsung.

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