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; Pressure sensor connector broken or loose; Pressure sensor resistance out of range (pin 1 to pin 3: 21-23 Ohm +/-10%); Air chamber and tube clogged; Main PWB defective

How to Fix

1. 1

   Confirm PE is displayed (Note: PE error does not disappear when Start/Pause is pressed; power will turn off within 20 seconds if unresolved)

2. 2

   Check pressure sensor connector — if broken or loose, reconnect or repair

3. 3

   Measure resistance of pressure sensor (pin 1 to pin 3) — spec: 21-23 Ohm +/-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 WM8900H Series Washers (2016) (2016–present)