Samsung Washer 4E Error Code — What It Means
The 4E error code (sometimes displayed as 4C on certain models or regions) indicates that your Samsung washer has detected a water supply or inlet fill problem. The machine is not receiving water properly during the fill cycle, so it stops and displays the fault.
Samsung’s diagnostics show that the control board expected the tub to fill within a set time window, but the water level sensor reported insufficient fill. This can happen because water is physically blocked from entering, or because the inlet valve or sensing circuit has failed even when supply conditions are normal.
Before You Replace Anything
Many people replace the water inlet valve when the real problem is a clogged mesh filter screen at the hose connection or low house water pressure. Always inspect and clean the inlet screens and verify full tap pressure before ordering a new valve.
Common Causes
- Blocked or kinked inlet hose (~35%) The flexible supply hose is bent, crushed, or twisted so water cannot flow through at the rate the machine expects.
- Clogged inlet mesh filter screens (~30%) Fine screens inside the hose couplings trap sediment and mineral deposits over time, restricting flow even when the tap is open.
- Water supply valve not fully open or low house pressure (~20%) The shutoff valve at the wall is closed, partially closed, or the incoming water pressure is below Samsung’s 0.5 bar minimum specification.
- Failed water inlet valve (~10%) The solenoid-operated valve on the back of the washer does not open even when the control board sends the fill signal, blocking all flow.
- Faulty pressure sensor or control board (~5%) The water level sensing circuit reads incorrectly or the main board fails to energize the inlet valve, triggering a false fill timeout.
Quick Diagnosis
Answer these to narrow it down fast.
Is the water supply valve at the wall fully open and are both hot and cold taps on?
No: Turn both taps fully counterclockwise. If the error clears, that was the cause. If it persists, continue troubleshooting.
Does water flow strongly when you disconnect the inlet hose at the washer and hold it over a bucket?
No: Weak or no flow means a kinked hose, clogged screen, closed valve, or low house pressure. Inspect the hose path and clean the mesh filters.
After cleaning the inlet screens and straightening any kinks, does the washer fill normally when you restart a cycle?
No: Supply side is clear but the machine still faults. The inlet valve, pressure sensor, or control board is likely defective and will need testing or replacement.
Step-by-Step Fix
- Turn off both hot and cold water supply valves at the wall and unplug the washer from the outlet to cut power completely.
- Pull the washer forward enough to reach the back panel and locate the inlet hose connections at the top or rear of the cabinet.
- Disconnect the inlet hoses from the back of the washer (have a towel ready for residual water) and inspect each hose for kinks, sharp bends, or damage along its length.
- Remove the small mesh filter screens from inside each inlet port on the washer and from the threaded hose couplings, then rinse them under running water to clear sediment and mineral buildup.
- Reconnect the hoses firmly, turn the supply valves fully open, plug the washer back in, and run a rinse or quick-wash cycle to verify that water flows and the 4E code does not return.
- If the error persists after hose and filter service, test the water inlet valve by listening for a click or hum when the fill cycle starts (you may need to access the valve directly and check for voltage during fill), or replace the valve if it shows no response.
- Perform a full power reset by unplugging the washer for two minutes if the fault reappears intermittently, which can clear a transient control lockup and confirm whether the issue is electrical rather than mechanical.
Parts Often Needed
| Part | Notes |
|---|---|
| Samsung washer inlet hose | Amazon | Reinforced rubber supply hose, typically sold in pairs with brass or plastic fittings. Replace if cracked or kinked beyond straightening. |
| Water inlet valve assembly | Amazon | Model-specific dual- or single-solenoid valve. Verify your washer’s model number to match the correct valve before ordering. |
When to Call a Pro
Call a technician if you have verified that both supply valves are open, the inlet hoses are clear and straight, the mesh screens are clean, nearby faucets show strong pressure, and the washer still displays 4E. At that point the fault is inside the machine and requires live voltage testing of the inlet valve solenoids and inspection of the pressure-sensor circuit and control board. A qualified appliance tech can measure whether the board is sending the correct signal to the valve during fill and determine if the valve, sensor, or PCB needs replacement. Also call a pro if you are uncomfortable working with water connections or if the washer is still under warranty, since DIY disassembly may void coverage.
Rough cost: DIY runs about $15-50 in parts, 30-60 min. A pro service call runs about $120-250 service call and valve replacement.