PE
Samsung Washing Machine
Severity: ModerateWhat Does This Error Mean?
The PE error on a Samsung washer indicates a problem with the water level pressure sensor. This sensor monitors how much water is inside the drum by measuring air pressure in a tube connected to the tub. When it fails or its tube gets blocked, the washer cannot accurately detect the water level. The washer may overfill, underfill, or refuse to start a cycle.
Affected Models
- WF45R6100AW
- WF42H5200AF
- WF210ANW
- WF203ANS
- Older Samsung top-load and front-load models
Common Causes
- The pressure sensor itself has failed electrically
- The small plastic tube connecting the pressure sensor to the tub is kinked, blocked, or disconnected
- Mold or soap residue has built up inside the pressure tube, blocking the air passage
- The wiring harness to the pressure sensor has come loose or corroded
- The main control board has a fault causing it to misread the pressure sensor signal
How to Fix It
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Power the washer off and unplug it. Wait 5 minutes, then plug it back in and power it on. Run a short test cycle. A soft reset sometimes clears a temporary PE error caused by a sensor glitch.
If PE appears only occasionally and the washer otherwise works normally, an intermittent glitch may be the cause. If PE appears every cycle, a physical fault is more likely.
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Locate the pressure tube — a thin clear or black rubber hose that runs from the side of the tub up to the pressure sensor (usually near the top of the machine). Inspect it for kinks, cracks, or disconnected ends.
On most Samsung washers, accessing the pressure tube requires removing the top panel (usually held by two rear screws). The tube is about 5–8mm in diameter.
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Disconnect the pressure tube from the sensor and blow through it gently. It should flow freely with no resistance. If you feel resistance or the tube is clearly blocked, clear the blockage with a thin wire or replace the tube.
Soapy residue and mold can build up inside the pressure tube over years of use, especially if liquid detergent is used heavily. This blockage is a common and inexpensive cause of PE.
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Reconnect the tube securely to both the sensor and the tub fitting. Run a full rinse and spin cycle to see if PE clears.
Make sure the tube is fully seated on both connection points and is not kinked anywhere along its path.
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If the tube is clear and properly connected but PE persists, the pressure sensor itself needs to be replaced. Have a Samsung technician replace the sensor — it is a straightforward part swap but requires accessing the interior of the machine.
Pressure sensor replacement parts cost $15–$40. Combined with labor, the total repair is usually under $200.
When to Call a Professional
PE often involves accessing the pressure sensor inside the top or back panel of the washer. Pressure sensor replacement typically costs $100–$200 including labor. If the control board is the cause, expect $200–$400. Always check the pressure tube first — a blocked tube is a free fix.
Frequently Asked Questions
What does the water level pressure sensor do in a washing machine?
The pressure sensor monitors how much water is inside the tub. It works by measuring air pressure in a tube connected to the bottom of the tub. More water = higher air pressure in the tube = the sensor detects a higher fill level. The washer's computer uses this information to stop filling at the right level and to know when the tub is drained.
Can I use my Samsung washer while PE is showing?
Not reliably. With a faulty water level sensor, the washer may overfill — which can cause overflow and water damage to your floor. It may also fail to fill adequately, resulting in a poor wash. Do not run the washer until the PE error is resolved.
How long does PE repair take?
Checking and clearing the pressure tube takes about 30–45 minutes for a home mechanic. A professional replacement of the pressure sensor typically takes 1 hour. Parts are usually in stock at appliance repair shops or available on Amazon with fast shipping.