Samsung dishwasher 4C code: water supply error

The dishwasher is not getting enough water. Check that the supply valve under the sink is open and the inlet hose is not kinked.

Likely causes

Listed from most to least common.

1. Water supply valve under the sink closed
2. Inlet hose kinked or crushed
3. Low water pressure
4. Clogged inlet screen
5. Faulty water inlet valve

How to fix the 4C code

Unplug the dishwasher or switch it off at the breaker before removing any panel or filter.

1. 1

   Step 1: Open the supply valve

   Check the valve under the sink that feeds the dishwasher is fully open.

2. 2

   Step 2: Check the inlet hose

   Make sure the hose from the valve to the dishwasher is not kinked or crushed behind the cabinet.

3. 3

   Step 3: Check water pressure

   Run the kitchen tap. Weak flow points to a supply problem.

4. 4

   Step 4: Reset the dishwasher

   Turn the dishwasher off at the breaker for a minute, then run a quick cycle.

You'll need: Flashlight.

Parts that may need replacing

Check your model number on the label inside the door or on the back before ordering.

• Samsung dishwasher water inlet valveCheck prices

When to call a technician

If supply and pressure are fine, the inlet valve or its screen likely needs servicing, which means pulling the dishwasher out.

A typical repair for this code costs $120–$280 in the US, including parts and labor. Prices vary by area and model.

Models this applies to

• DW80 series dishwashers
• Bespoke and StormWash models

Codes can differ slightly between models. Your owner's manual is the final word and is available from Samsung support.

Common questions