LG Washer PE Error: Water level sensor fault
LG washer error — here’s what you need to know. The PE error code on your LG washing machine indicates Water Level Pressure Sensor Error. This is a Medium severity issue. What Does PE Mean on an LG Washer? PE means the control board is receiving an out-of-range or implausible signal from the water level […]
~55%
DIY Fixable
From 10
Typical Repair Cost
30 – 60 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. The washer should not be used until PE is resolved, as an inaccurate water level reading can cause underfilling (poor wash results) or overfilling (flood risk).
Can I reset the code?
Yes. After reconnecting or clearing the pressure hose, unplug the washer for 5 minutes, then plug back in and restart the cycle. If PE does not return, the hose was the issue.
When to stop immediately?
Stop if you notice: The washer is overfilling and water is approaching the door seal — turn off the water supply immediately., PE appears on every cycle even after the hose is secured and clear..
Symptoms You May Notice
Washer fills too much or too little before washing
The machine adds far more or far less water than expected for the selected cycle, indicating it cannot accurately read the current water level.
Cycle stops randomly during fill or wash phase
The control board receives an implausible sensor reading mid-cycle, causing an unexpected halt and PE code display.
PE code at start or mid-cycle
The error appears immediately when filling begins or partway through a cycle as the sensor signal drops out of the acceptable range.
Inconsistent temperature performance
The washer runs too hot, too cold, or cycles erratically because the control board receives inaccurate temperature readings from the faulty sensor.
Possible Causes
Disconnected or damaged pressure hose
The thin rubber or plastic hose connecting the tub to the pressure sensor can pop off a fitting, crack, or become kinked, breaking the air column the sensor relies on.
DIY PossibleHose blocked by suds or water
Over-sudsing from too much or wrong-type detergent can push foam into the pressure hose, physically blocking the air pathway and causing erratic sensor readings.
DIY PossibleFailed pressure sensor
The sensor's internal diaphragm or electronic components can fail, sending a constant out-of-range signal to the control board regardless of actual water level.
Requires ProfessionalSafe Checks You Can Do
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1
Locate and inspect the pressure sensor hose
Unplug the washer and remove the top panel (usually two screws at the rear). Find the small rubber hose running from the side of the tub up to the pressure sensor near the top of the cabinet. Check both ends are firmly connected and the hose has no cracks or tight kinks.
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2
Clear the hose of any blockage
Disconnect the hose from both ends and blow gently through it to confirm it is clear. Rinse with warm water if suds residue is visible inside. Reconnect securely at both fittings.
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3
Switch to HE detergent and reduce amount used
Ensure you are using HE-rated detergent and not exceeding the recommended dose (typically 1–2 tablespoons for a normal load). Run a Tub Clean cycle to flush suds residue from the hose.
When to Call a Professional
Contact a qualified technician if:
- Pressure hose is intact and connected but PE still appears — the sensor component needs multimeter testing and likely replacement.
- Hose connection fittings on the tub or sensor are cracked and cannot seal properly — fitting or tub repair required.
- PE occurs alongside other sensor-related errors (IE, FE), suggesting a broader control board or wiring issue.
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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