LG washing machines are known for their efficiency, smart features, and user-friendly controls. Yet even the most advanced washers can display error codes that interrupt your laundry routine. One such code is PE, which points to a problem with the washer’s water pressure sensor or water level sensor. Understanding what this error means, why it happens, and how to fix it can save you time and help prevent future issues.
What the PE Error Means
The PE error indicates that the washer has detected an irregularity with the water pressure or water level sensor. These sensors ensure the machine fills with the correct amount of water for each cycle. If the sensor is sending inaccurate readings or is malfunctioning, the washer may stop mid-cycle and display the PE code.
Symptoms of a PE error include:
- Washer stops filling or spinning.
- Error code PE appears on the display.
- Water level may be too low or too high compared to the selected cycle.
- Washer may fail to resume operation even after restarting.
Common Causes
Several issues can trigger the PE error:
- Faulty water pressure sensor: Over time, the sensor may wear out or fail, preventing accurate readings.
- Defective water level sensor: Similar to the pressure sensor, a malfunctioning level sensor can confuse the washer’s control board.
- Wiring issues: Loose, damaged, or corroded wires can interrupt communication between the sensors and the control board.
- Temporary electronic glitch: Occasionally, a minor software or electronic hiccup can trigger the PE code, which may clear after a short power reset.
DIY Troubleshooting and Solutions
While some PE errors require professional repair, there are a few steps you can safely try at home:
- Power Reset: Turn off the washer and unplug it for about 10–15 seconds. Restart the machine to see if the error clears. This simple reset can fix temporary electronic glitches.
- Check Water Supply: Make sure water faucets are fully open and water pressure is normal. Low water pressure can sometimes mimic a sensor fault.
- Inspect Sensor Connections: If comfortable, remove the washer panel and check that the sensor connectors are secure and undamaged. Look for corrosion or loose pins.
- Replace Faulty Sensors: If the PE error persists and visual inspections show no wiring issues, the water pressure or water level sensor may need replacement. Make sure to use the correct OEM replacement part for your LG model.
Preventive Measures
To reduce the chance of future PE errors:
- Avoid sudden power interruptions during wash cycles.
- Maintain consistent water pressure in your home plumbing.
- Inspect hoses and connections regularly for leaks or kinks.
- Keep the washer clean and free from debris that could affect the sensors.
- Schedule periodic maintenance checks, especially if your washer is several years old.
Quick Troubleshooting Checklist
- Power off and unplug the washer briefly, then restart.
- Ensure water supply is sufficient and consistent.
- Inspect sensor wiring and connectors for damage or looseness.
- Replace the water pressure or water level sensor if malfunctioning.
- Maintain the washer with regular cleaning and inspections.
The PE error is a warning that the washer cannot reliably measure water levels, which is critical for proper cleaning and safe operation. Addressing the problem promptly ensures that your LG washer continues to operate efficiently and prevents potential damage to other components.