LG Washing Machine PE Error Code Explained: Meaning, Causes & Fixes

 
Preliminary Safety and Setup
 

• Disconnect the power by unplugging the washing machine and switching off the water supply to ensure safety before any repairs.
• Allow the machine to sit for a few minutes so that any residual voltage dissipates completely.
• Make sure the washing machine is stable and on a flat surface to avoid any accidental movement during troubleshooting.

 
Clean and Inspect the Air Pressure Tube
 

• Locate the air pressure tube that connects to the pressure sensor; it’s typically found near the control module.
• Remove the tube carefully, checking for any kinks, blockages, or damage that may interfere with its function.
• Rinse the tube under running water to eliminate any debris, and ensure that the tubing is completely clear and flexible.
• Reinstall the tube securely, ensuring there are no disconnections or leaks.

 
Examine Sensor and Wiring Connections
 

• Identify the pressure sensor inside the control panel assembly and inspect the sensor’s physical condition, looking for cracks or signs of wear.
• Disconnect the sensor’s connector and then reconnect it firmly, checking for any corrosion or loose pins that might cause a poor connection.
• Visually inspect the wiring harness for any frayed or damaged wires that may contribute to incorrect readings.
• If accessible, gently clean the contacts with a non-abrasive electrical cleaner to ensure proper connectivity.

 
Conduct Electrical Tests and Sensor Calibration
 

• Using a multimeter, measure the resistance of the pressure sensor against the specifications provided in the service manual to verify its functionality.
• Confirm that the sensor’s electrical readings fall within the normal range; an abnormal reading may indicate that the sensor is failing.
• Inspect the related circuit board area for any obvious signs of damage or burnt components, which may necessitate further professional repair.
• Ensure all wire connections on the board are secure and that there is no debris or corrosion compromising the circuit.

 
Reset the Washing Machine and Test Operation
 

• After reassembling all disconnects and cleaning procedures, plug the machine back into the power outlet and switch on the water supply.
• Run a short, diagnostic cycle to check if the PE error reoccurs; observe the machine for proper water level adjustments during the cycle.
• Monitor the error code indicator closely – if the error disappears, the troubleshooting steps have likely resolved the issue.
• If the machine returns to normal operation, allow it to complete a full cycle to ensure that the problem is completely fixed.

 
Contact Professional Service if Necessary
 

• If after completing these steps the PE error still persists, it may indicate a more complex fault that requires advanced diagnostic tools.
• Reach out to an authorized LG service technician who has access to detailed wiring diagrams and OEM replacement parts.
• Provide the technician with as much detail as possible about the troubleshooting steps already taken to help expedite the repair process.