LG Error Code PE1 — Error Code PE1

Service Guy AI • Washer • Medium severity • Intermediate skill • ~30 min repair

What Does LG Error Code PE1 Mean?

LG washer: Error Code PE1

This is a medium-severity fault. The machine may complete the current cycle but is signalling a problem you should resolve before it escalates.

Possible Causes (5)

LG engineers identify the following root causes for fault code PE1. Work through them in the order shown — they are listed from most common to least common.

1. Faulty pressure switch
2. Blocked drain pump
3. Improper door interlock operation
4. Control board malfunction
5. Wiring issue in the harness

Step-by-Step Troubleshooting (6 steps)

Follow this sequence to diagnose and clear LG error code PE1. Power down and unplug the machine before any internal inspection.

1. Disconnect power before servicing.
2. Inspect the pressure switch for proper operation and replace if faulty.
3. Check the drain pump for blockages and clear any debris.
4. Test the door interlock for proper engagement and replace if necessary.
5. Examine the wiring harness for any visible damage or loose connections.
6. Reassemble the machine and restore power to test for error code recurrence.

Required Parts

Have these LG OEM part numbers ready before starting the repair. AAdvantage Laundry Systems carries verified parts for every code in this database.

• Pressure Switch
• Drain Pump
• Door Lock Assembly

Diagnostic Test Mode

Enter LG diagnostic test mode: Hold 'Rinse+Spin + Power' for 3 seconds

Skill Level & Repair Time

This repair is appropriate for an experienced laundromat owner or in-house technician. You should be comfortable removing service panels, reading wiring diagrams, and using a multimeter to test continuity and voltage. Plan for approximately 30 minutes of active repair time once parts are on hand.

Get AI-Powered Diagnosis

If the steps above don't resolve LG PE1, run a free Service Guy AI diagnosis. Upload a photo of the error display and get an AI-generated repair plan tied to your exact LG model number, including supplier links for required parts and on-call technician escalation.

Other LG Error Codes