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Guide on PE Error Code on LG Washing Machines: Diagnosis and Solutions

Technically Reviewed by Oleg Chudnovski on Nov 06, 2025 | Written by Spark Service PRO Editorial Contributors

Sometimes, LG washing machines may encounter occasional issues, and the PE error code is one such challenge users may face. Let's try to delve into the guide and explore when the PE error code occurs, identify the responsible components, and provide effective solutions to resolve this problem.

When Does the PE Error Code Happen

The PE error code typically occurs when the washing machine's water level sensor or pressure switch malfunctions. This code is triggered when the machine is unable to detect the water level accurately, potentially leading to issues during the washing cycle.

Components Responsible for the PE Error Code

PE error code may potentially emerge only because of the water level sensor:

• Water Level Sensor (Pressure Switch): The water level sensor, also referred to as a pressure switch, monitors the water level within the drum. Anomalies in this sensor's readings can trigger the PE error, indicating a potential issue with water level detection.

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How to Fix the PE Error

You need a systematic approach to address issues caused by the water level sensor. Here's a step-by-step guide.

Pause and Restart the Cycle:

• If the PE error occurs mid-cycle, pause the machine and restart the cycle. This can sometimes reset the sensor and resolve temporary glitches.

Check Water Supply:

• Ensure a consistent and sufficient water supply to the washing machine. Insufficient water levels or water pressure can lead to inaccurate readings by the water level sensor.

Inspect the Water Inlet Valve:

• The water inlet valve controls the flow of water into the washing machine. Check for clogs or malfunctions that may hinder proper water intake and replace the valve if necessary.

Examine the Water Level Sensor:

• Inspect the water level sensor for any visible damage, loose connections, or debris. Clean the sensor and its surroundings to ensure accurate readings. If issues persist, consider replacing the water level sensor.

Check for Blockages:

• Inspect the drain hose and pump filter for any blockages. A blocked drainage system can interfere with water levels and trigger the PE error. Clear any obstructions to ensure smooth water flow.

Run a Calibration Cycle:

• Some washing machines allow users to run a calibration cycle. Refer to the user manual for instructions on initiating a calibration to reset the water level sensor.

Summary of PE Error Code Repair

The PE error on LG washing machines is primarily associated with issues related to the water level sensor or pressure switch. By systematically addressing problems with the water supply, the water inlet valve, and the sensor itself, you can solve this problem without any obstacles.

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