How do I fix error code PE on a LG washers?

1. undefined: Confirm PE ERROR is displayed. 2. undefined: Check if pressure sensor connector is broken or loose. If YES → reconnect or repair connector. 3. undefined: If NO → measure resistance of pressure sensor (pin 1 to pin 3); should be 21-23 Ω ±10%. If out of range → replace pressure switch. 4. undefined: If resistance OK → check if air chamber and tube are clogged. If YES → fix air chamber and remove foreign material. 5. undefined: If NOT clogged → replace MAIN PWB ASSEMBLY.

LG Washers2016–present

Error Code PE

Pressure Sensor Error — PRESSURE SENSOR ASSEMBLY is out of order; water level frequency consistently below 10 kHz or over 30 kHz. Note: PE error will not disappear when START/PAUSE is pressed; if unresolved within 20 seconds power turns off and error blinks.

Moderate

Address soon - your appliance may not work properly

What This Means

Pressure sensor connector broken or loose; Pressure sensor resistance out of range (pin 1 to pin 3 should be 21-23 Ω ±10%); Air chamber or tube clogged with foreign material; MAIN PWB ASSEMBLY failure

How to Fix

1
Confirm PE ERROR is displayed.
2
Check if pressure sensor connector is broken or loose. If YES → reconnect or repair connector.
3
If NO → measure resistance of pressure sensor (pin 1 to pin 3); should be 21-23 Ω ±10%. If out of range → replace pressure switch.
4
If resistance OK → check if air chamber and tube are clogged. If YES → fix air chamber and remove foreign material.
5
If NOT clogged → replace MAIN PWB ASSEMBLY.

This Error Applies To

LG WM8100H Series Washers (2016) (2016–present)

Service manual exact match: WM8100HWAService manual exact match: WM8100HVA

Related Error Codes

Sud

Suds Error — too many suds detected. Machine adds a Suds Reducing cycle (adds approximately 2 hours to cycle time). If too many suds detected during spinning, machine stops to prevent leaking.

Locked Motor Error — motor or motor harness fault.

Unbalance Error — load balance issue prevents spin.

Overflow Error — water is overflowing; water level frequency is over 21.3 kHz. Note: when FE is displayed, the drain pump will operate automatically to drain water. Power will NOT be turned off automatically.

dE2

Door Open Error (variant) — door switch circuit fault, same root causes as dE1.

EEPROM Error — EEPROM is out of order. Displayed only when START/PAUSE button is first pressed in Load Test Mode.

Power Failure — power supply was interrupted while washing machine was in operation, then power was rapidly restored.

Water Inlet Error — correct water level (24.6 kHz) not reached within 8 minutes after water is supplied, or does not reach preset water level within 20 minutes.

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