PE3
Samsung Washing Machine
Severity: ModerateWhat Does This Error Mean?
PE3 means there is a fault with the water pressure sensor (also called the water level sensor or frequency sensor). This sensor tells the washer how much water is in the drum. Without accurate water level information, the machine cannot control filling correctly and stops the cycle. This is a component fault that usually requires a part replacement.
Affected Models
- WF45R6100AW
- WF45T6000AW
- WF50R8500AV
- WF56H9100AG
- Samsung front-load washers with frequency-type pressure sensors
Common Causes
- Faulty pressure sensor that has drifted out of its normal frequency range
- Blocked or kinked pressure chamber hose connecting the tub to the sensor
- Water or condensation inside the pressure sensor hose causing inaccurate readings
- Loose or corroded connector at the pressure sensor
- Defective main control board misreading the pressure sensor signal
How to Fix It
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Unplug the washer and turn off the water supply. Run a power reset first — hold the power button for 5 seconds, unplug for 5 minutes, then plug back in and try a cycle.
A brief power glitch can occasionally trigger PE3. A reset may clear a one-time fault.
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Remove the top panel of the washer (usually secured by two screws at the back). Locate the pressure sensor — it is a small cylindrical component near the back or side of the tub with a thin rubber hose connected to it.
Take a photo of the sensor location and hose routing before disconnecting anything.
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Inspect the thin rubber pressure hose from the sensor to the tub. Look for kinks, cracks, or blockages. Blow gently through the hose to confirm it is clear.
A blocked pressure hose will cause the sensor to read the wrong water level, which triggers pressure sensor error codes.
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Unplug the pressure sensor connector and inspect the pins. Clean with electrical contact cleaner if you see any corrosion or moisture.
Reconnect firmly and run a test cycle to see if PE3 returns.
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If PE3 returns after cleaning and hose inspection, the pressure sensor itself has failed and needs to be replaced. Order the correct sensor by your washer's model number.
Install the replacement, reconnect the hose and connector, reassemble, and run a normal cycle to confirm the error is gone.
When to Call a Professional
Pressure sensor replacement is a moderate DIY repair on Samsung washers. The sensor is usually accessible after removing the top panel. The part costs $20 to $50. If you are not comfortable working inside the machine, a technician can replace it for $100 to $200 total.
Frequently Asked Questions
What is a pressure sensor in a washing machine?
The pressure sensor measures how much air pressure is in a sealed chamber connected to the drum. As water fills the drum, it compresses the air in the chamber. The sensor detects this pressure and tells the control board exactly how full the drum is. A failed sensor means the washer cannot measure water level accurately.
Can a PE3 error cause the washer to overfill?
Yes. If the pressure sensor is stuck reading low, the washer may keep filling because it thinks there is not enough water. This can lead to overfilling and potential flooding. Stop using the machine if you notice water overflowing during the fill cycle.
Is PE3 different from PE and PE2?
Yes, they are related but indicate slightly different faults within the pressure sensing circuit. PE is the general pressure sensor error. PE2 and PE3 are more specific fault codes that some Samsung models use to indicate different types of sensor failures. All three usually require inspection of the sensor and its hose.