Samsung Washer Error Code EC — What It Means & How to Fix It

What Does This Error Mean?

The EC error on a Samsung washer indicates a problem with the water level pressure sensor — also called the pressure switch. This sensor tells the washer how much water is in the drum. If it fails or gives wrong readings, the washer may overfill, underfill, or refuse to start. This code is less common but very fixable.

Affected Models

WF45R6100AW
WF42H5000AW
WF338AAB
WF410ANW
Older Samsung front-load and top-load models

Common Causes

Clogged pressure sensor hose that connects the drum to the pressure sensor
Faulty water level pressure sensor that is giving incorrect readings
Air leaking from the pressure sensor hose, causing false water level readings
Main control board fault causing it to misinterpret the pressure sensor signal
Small foreign object (coin, button) trapped in the sump area affecting pressure readings

How to Fix It

Unplug the washer and wait 5 minutes, then plug back in. Restart the cycle. Like many Samsung error codes, EC can be triggered by a one-time electronic glitch that clears with a reset.

If the code only appeared once and doesn't return, you may not need to take any further action.
Locate the pressure sensor hose. It's a thin rubber or plastic hose that runs from the bottom of the drum (sump area) up to the pressure sensor at the top of the machine. Look for kinks, cracks, or disconnection.

On most Samsung front-loaders, accessing this hose requires removing the top panel or back panel of the washer.
Disconnect the pressure hose and blow through it gently to check if it is clogged. Soap residue and mineral deposits can partially block the hose over time, preventing accurate pressure readings.

Rinse the hose with warm water and let it dry before reconnecting. Do not use compressed air — the pressure can damage the sensor.
Inspect the hose connections at both ends — at the drum fitting and at the pressure sensor. Make sure they are firmly attached with no air leaks. An air leak in this hose is the most common cause of EC.

If the hose is cracked or brittle, replace it. Replacement hoses are inexpensive and available online for your model.
If the hose is clear and secure and the error persists, the pressure sensor itself is likely faulty. Have a technician test it with a multimeter. If the sensor is confirmed bad, replace it.

Pressure sensors on Samsung washers are typically located behind the rear panel or under the top panel, depending on the model.

When to Call a Professional

If cleaning the pressure hose doesn't resolve the EC error, a technician should test the pressure sensor. Sensor replacement costs $40–$80 for the part. A service call including labor typically runs $150–$250 total.

Frequently Asked Questions

What does the pressure sensor do in a washing machine?

The pressure sensor measures how much water is in the drum. It works by detecting the air pressure in a small sealed tube connected to the drum. More water = more air pressure in the tube. The washer uses this reading to know when the drum is full and to stop filling.

Can the EC error cause the washer to overflow?

It can, yes. If the pressure sensor is giving false low readings, the washer may think there is less water than there actually is. It then keeps filling until the EC error triggers the shutdown. If you see water leaking from the washer or the drum looks too full, unplug it immediately.

Is EC the same as OE on Samsung washers?

No, they are different. EC relates to the water level pressure sensor having a fault. OE (overflow error) means the washer actually detected too much water inside. EC is a sensor hardware fault, while OE is a water level threshold being exceeded. However, a failing pressure sensor (EC) can lead to an OE condition.