Error Code PE

Pressure Sensor Error

What This Means

Pressure sensor assembly out of order; Water level frequency consistently below 10 kHz or over 30 kHz; Connector to pressure sensor disconnected or disassembled; Pressure sensor resistance out of range (pin 1 to pin 3: 21-23 Ω ±10%); Air chamber and tube clogged

How to Fix

1. 1

   Confirm PE is displayed — note: PE error does not auto-clear; if not resolved within 20 seconds, power will turn off and error will blink

2. 2

   Check if connector to pressure sensor is disconnected — if yes, reconnect or repair

3. 3

   Check resistance of pressure sensor (pin 1 to pin 3) — should be 21-23 Ω ±10%; if out of range, replace pressure switch

4. 4

   Check if air chamber and tube are clogged — if yes, fix air chamber and remove foreign material

5. 5

   If all above pass, replace MAIN PWB assembly

This Error Applies To

LG WM3670H Series Washers (2016) (2016–present)