What does PE mean on a LG washer?

PE means: Water level pressure sensor error. The most likely parts involved are water level pressure switch (sensor), pressure sensor air tube, wire harness.

How much does it cost to fix PE?

A typical control board replacement costs about $200–$500 nationally, parts and labor included. This is a reference range, not a quote — local prices vary.

Can I keep using my LG washer with a PE code?

The washer usually stops the cycle when it shows PE, so it may not run normally. If a restart clears it, the washer may work for a while, but the code tends to return until the cause is fixed. Watch for leaks or overfilling if you run it.

Why did the PE code show up after a soapy or heavy load?

Heavy suds or water getting into the air tube can confuse the pressure reading. Using the correct amount of HE detergent and restarting the washer sometimes clears it. If it keeps happening, the tube or sensor may need service.

Error codes › Washer › LG

LG Washer PE Error Code

Water level pressure sensor error

Applies to: All Front-Load and Top-Load digital models.

What's going on

On an LG washer, PE means the control cannot read the water level sensor correctly. The sensor uses air pressure to measure how much water is in the tub, and the washer stopped getting a normal signal from it. Start by restarting the washer and checking for simple problems. If the code comes back, the sensor, its air tube, or its wiring likely needs attention.

Inside the washer, a small air tube runs from the bottom of the tub up to a water level pressure sensor. As water fills the tub, it pushes air up the tube. The sensor reads that rising pressure and tells the control how full the tub is.

The control expects the reading to change within a set amount of time during fill and drain. If the reading does not change, or makes no sense, the washer shows PE and stops. This protects against overfilling or running with too little water. The code applies to LG front-load and top-load digital models. Codes can differ between model generations, so confirm the meaning with your model number and owner's manual.

Likely causes

water level pressure switch (sensor) — The sensor can wear out or fail inside. It may then send no signal or a wrong signal, even when the water level is normal.
pressure sensor air tube — The thin tube can kink, crack, slip off, or clog with soap residue or water. Then air pressure never reaches the sensor correctly.
wire harness — A loose, damaged, or corroded connection between the sensor and the control can interrupt the signal. The control then reads it as a sensor error.

The same code can mean different things on different model generations. Check the model number on your washer's rating plate before ordering parts.

Can you fix it yourself?

Doable for an experienced DIYer with the right part, but many people still call a technician.

Safe things to check first

Power-cycle the washer. Unplug it or switch off its breaker for a few minutes, then restore power and run a short cycle to see if PE returns.
Make sure the water supply valves behind the washer are fully open and the fill hoses are not kinked.
Check the drain hose for kinks or crushing, and make sure the washer is not pushed tight against the wall.
Use only HE detergent in the right amount. Too many suds can disturb the pressure reading. Unplug the washer or switch off its breaker before touching anything inside it.

When to call a technician

If PE keeps coming back after a restart and the simple checks, call a qualified appliance technician. A handy owner with the right part for their model may be able to replace the sensor or air tube. Call a technician if you are not comfortable removing panels, or if the problem turns out to be wiring or the control board.

What the repair usually costs

$200–$500

Control board replacement, parts and labor — national reference range

Confidence: low (based on a single cost guide — treat as a rough guide). Plus a service call fee of about $50–$100, often credited toward the repair.

This is not a quote. Prices vary by region and by model.

Repair or replace?

Repair usually makes sense. Even the high end of this repair stays under $500, about half the price of a typical new washer.

A typical new washer costs about $700–$1,300.

Check your washer — free, 2 minutes

Common questions

What does PE mean on a LG washer?: PE means: Water level pressure sensor error. The most likely parts involved are water level pressure switch (sensor), pressure sensor air tube, wire harness.
How much does it cost to fix PE?: A typical control board replacement costs about $200–$500 nationally, parts and labor included. This is a reference range, not a quote — local prices vary.
Should I repair or replace my washer?: Repair usually makes sense. Even the high end of this repair stays under $500, about half the price of a typical new washer.
Can I fix PE myself?: Doable for an experienced DIYer with the right part, but many people still call a technician.
Can I keep using my LG washer with a PE code?: The washer usually stops the cycle when it shows PE, so it may not run normally. If a restart clears it, the washer may work for a while, but the code tends to return until the cause is fixed. Watch for leaks or overfilling if you run it.
Why did the PE code show up after a soapy or heavy load?: Heavy suds or water getting into the air tube can confuse the pressure reading. Using the correct amount of HE detergent and restarting the washer sometimes clears it. If it keeps happening, the tube or sensor may need service.