Samsung Dishwasher Error Code 4C
The dishwasher starts, may drain briefly, and then stops because little or no fresh water is coming in. In most homes the cause is something simple, like a closed tap, a kinked inlet hose, or a clogged inlet filter, rather than a failed part inside the machine.
Also shown as: 4E
Common causes
- Water supply tap under the sink is closed or partly closed
- Inlet hose is kinked, squashed, or frozen
- Mesh filter in the inlet hose or inlet valve is clogged with grit
- Household water supply is off or pressure is too low
- Faulty water inlet valve
What to check, in order
- Make sure the tap supplying the dishwasher is fully open and water is available elsewhere in the home.
- Check the inlet hose runs freely with no sharp bends or anything pressing on it.
- Turn the tap off, unscrew the inlet hose, and rinse out the small mesh filter at the connection.
- Make sure a FloodSafe-style hose is not fitted, as Samsung dishwashers should not use one.
- Run a cycle again, and if the code returns with good water pressure at the tap, have the inlet valve tested.
Clear the code and test
- Fix what the checks above found first — a filter cleaned, a hose straightened, the spray arms freed. Clearing the code without fixing the cause only brings it back.
- Close the door, plug the dishwasher back in (or restore its breaker) and make sure the water tap is open.
- Run the shortest programme and stay nearby for the first minutes, watching for leaks and listening for the drain pump.
- If the programme finishes with no code, the fault is cleared. If the code returns, write down the code and when it appeared before calling a technician — it speeds up the diagnosis.
When to call a professional
Most cases are solved by the checks above. Book a technician if any of these apply:
- The code comes back after you have run the checks and a test cycle.
- You smell burning, see sparks or scorch marks, or the breaker trips.
- Water is leaking and you cannot stop it at the tap.
- The fix needs panels opened beyond what your manual describes, or a part tested with a meter, and you are not set up for that.
When you call, give the brand, the code 4C, your model number (on a label inside the door or on the back) and the checks you already ran. It shortens the visit.
Parts that may be involved
Water inlet valveInlet hoseSupply tap
Parts are model-specific. Find your model number first — usually on a label inside the door, on the door frame or on the back — and match the part to that number before ordering.
Questions people ask about 4C
What does 4C mean on a Samsung dishwasher?
4C means: Water supply error: the dishwasher is not filling with water. The dishwasher starts, may drain briefly, and then stops because little or no fresh water is coming in. In most homes the cause is something simple, like a closed tap, a kinked inlet hose, or a clogged inlet filter, rather than a failed part inside the machine.
Can I fix Samsung 4C myself?
Start yourself: the checks on this page cover the causes you can reach without opening the machine up. If they point to a faulty part, testing or replacing it is usually a technician job.
How do I clear Samsung 4C?
Fix the cause first — clearing the code on its own brings it straight back. Then restore power and water, run the shortest programme, and watch the stage where the code appeared. If the programme finishes with no code, it is cleared.
Sources checked
- Samsung support: washing machine information codes
- Samsung support: dishwasher information codes
- Samsung support (US): dishwasher troubleshooting
The meaning and checks for this code were checked against the sources above in November 2026. Codes vary by model and region; if your manual lists a different meaning for your exact model, follow the manual.