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LG PE

LG Washing Machine Error PE: Water Level Sensor Malfunction

Clear meaning, realistic next steps, and safe guidance without turning the page into a long repair manual.

What it means

The washer's water level pressure sensor has returned an abnormal reading or has stopped responding. The machine cannot accurately determine how much water is in the drum and has stopped the cycle.

Severity

High - stop using the LG washing machine until the cause is understood or professional help is arranged.

Can you fix it yourself?

No — call a technician

Most likely cause

Clogged or kinked pressure sensor hose — the small tube connecting the sensor to the tub is blocked, preventing accurate pressure readings

Estimated time for safe first checks: Professional service required.

Step-by-Step DIY Fix Guide

  1. SAFETY: Unplug the washer.
  2. Reset by unplugging for 2–3 minutes, then restore power and retry an empty cycle.
  3. If PE returns, the pressure sensor hose or sensor itself requires professional inspection — the component is not accessible without removing the washer panels.
  4. Call LG Support at 1-800-243-0000.

If the warning comes back after restart

  • If the door closes normally but the warning keeps returning, the latch or switch path becomes more likely than a simple alignment issue.
  • If airflow still seems weak after the basic checks, the fan path or a deeper obstruction becomes more likely.
  • If the warning returns immediately after a clean restart, the sensor or wiring path becomes more likely than a one-time glitch.

What This Error Means

Error PE on your LG washing machine means: The washer's water level pressure sensor has returned an abnormal reading or has stopped responding. The machine cannot accurately determine how much water is in the drum and has stopped the cycle. The washer's self-diagnostic system has detected this condition and paused the current cycle.

The most frequent cause is clogged or kinked pressure sensor hose — the small tube connecting the sensor to the tub is blocked, preventing accurate pressure readings. Work through the causes and fix steps below in order — most LG washer errors are resolved without a service call.

LG's official guidance classifies PE as a technician-only fault. A 2–3 minute power reset is the only DIY step — if the code returns, contact LG Support at 1-800-243-0000.

Electronics and motor faults require professional diagnosis. A 2–3 minute power reset resolves transient faults. If the code returns after a reset, the physical component has failed and will not recover without replacement.

Most Likely Cause by Symptom

The LG washing machine may stop, pause, or refuse to complete the cycle normally.

Likely cause: Clogged or kinked pressure sensor hose — the small tube connecting the sensor to the tub is blocked, preventing accurate pressure readings

Check first: SAFETY: Unplug the washer.

The warning may return immediately because the appliance is detecting an internal fault.

Likely cause: Failed pressure sensor (pressure switch) — the sensor itself has failed and is sending a bad signal to the control board

Check first: Reset by unplugging for 2–3 minutes, then restore power and retry an empty cycle.

Common Causes

  • Clogged or kinked pressure sensor hose — the small tube connecting the sensor to the tub is blocked, preventing accurate pressure readings
  • Failed pressure sensor (pressure switch) — the sensor itself has failed and is sending a bad signal to the control board
  • Air leak in the pressure sensor hose — a hairline crack allows air to escape, causing erratic level readings
  • Control board fault affecting the sensor input circuit

What Not to Do

  • Do not run the washer with PE active — incorrect water level regulation can cause underfilling or overfilling

Model and Display Variation Notes

Model-family notes

  • LG washing machine display wording and code formats can vary by series.
  • If your model behaves differently, check the owner manual before trying any deeper maintenance step.

Display and panel differences

  • Panel wording can vary by series, so confirm the exact code pattern before buying parts.

Parts, Tools and Service Options

Service option

LG service visit if the warning returns after the basic checks are complete.

Manual and model check

Check your exact model and manual before ordering any LG washing machine parts.

Common parts

  • Water level pressure sensor ($20–$50)
  • Pressure sensor hose if hose is kinked or cracked ($10–$20)

This section stays service-first because the page points more strongly toward support or professional repair than a routine parts purchase.

When Not to Keep Troubleshooting

Any recurrence after a 2–3 minute power reset

How to Prevent It Recurring

  • Always use HE detergent at the correct dose — sustained overdosing deposits suds residue inside the pressure hose and can eventually block it

Related Error Codes

Extra notes

  • This page is based on LG support material and stays conservative where model-specific guidance may vary.
  • The goal is to help you identify safe first checks before you move into parts, service, or model-specific manual lookup.

Source and model notes

Last reviewed: 2026-04-08

Based on: Based on LG support material and edited into consumer-safe guidance for the exact code family on this page.

View LG US Official Support

Model coverage note: LG washing machine code meanings can vary by series, control panel, and model family, so use this page as a safe starting point rather than a replacement for the model-specific manual.

Important: FixThisError is an independent guide, not the manufacturer. Use your model-specific manual when the panel wording or behavior differs.

Always disconnect power before inspecting appliances. If unsure, contact a licensed appliance technician.