LG Washer Error Code 4E2

The 4E2 code on an LG washer signals a water supply or water temperature error. It appears when the cold and warm water inlet hoses are connected in reverse, or when the washer's temperature sensor detects heat exceeding 70°C during a dry cycle or 50°C during Wool or Lingerie cycles. The code is a protective measure designed to prevent overheating damage to fabrics and internal components.

No, you should stop using the washer until the cause is identified and corrected. The 4E2 code indicates the machine has detected temperatures that exceed safe limits for the selected cycle. Continuing to run cycles under these conditions can damage delicate fabrics and may cause harm to internal washer components over time.

If the fix is simply reconnecting reversed hoses, there is no parts cost involved. If the temperature sensor or thermistor needs replacement, parts typically range from $15 to $60 depending on the specific model. If a technician is needed for diagnosis and repair, expect labor costs in the range of $80 to $200 depending on your location and the complexity of the repair.

Start by turning off the washer and checking the hose connections at the back of the machine. Confirm that the hot water hose connects to the hot inlet and the cold water hose connects to the cold inlet, as labeled on the machine. If the hoses are correct, check your household water heater temperature setting to make sure the incoming water is not excessively hot. If the code persists after correcting hose connections and supply temperature, the temperature sensor may need to be tested or replaced.

A reset may temporarily clear the code display, but it will not resolve the underlying problem. If the hoses are reversed or the water supply temperature is too high, the 4E2 code will return as soon as the machine runs again and the sensor detects the out-of-range temperature. Always address the root cause before relying on a reset.