LG Washer Error Code 1E

The 1E code on an LG washer means the control board has detected an error with the water level sensor. This sensor uses a frequency signal, expected to be around 26.4 kHz under no-load conditions, to monitor how much water is in the drum. When the signal falls outside acceptable parameters, the washer stops and displays 1E. Causes range from a bent or disconnected air hose to a faulty sensor or control board.

No, you should not continue running the washer while the 1E code is active. Because the machine cannot accurately detect water levels, it risks overfilling the drum, which could cause water damage to your home or internal components. Stop using the machine until the fault is diagnosed and corrected.

A power reset by unplugging the washer for a few minutes may temporarily clear the display, but the 1E code will return if the underlying fault is not corrected. If the hose or connector was intermittently loose, reseating it before the reset may result in a lasting fix. If the sensor or Main PBA is genuinely faulty, no amount of resetting will resolve the problem.

Many 1E errors can be resolved without professional help by inspecting the air hose for kinks, blockages, or disconnections and by firmly reseating the sensor electrical connector. If those checks do not clear the code, measuring the sensor frequency output with a multimeter or frequency meter is the next step. Sensor replacement is a moderate DIY repair, but a Main PBA fault generally requires professional diagnosis.

If the fix is simply reseating a connector or clearing a clogged hose, there is no parts cost. A replacement water level sensor typically runs in the range of $15 to $60 depending on the model. If the Main PBA requires replacement, parts and labor can range from $150 to $400 or more, making it worth considering the age and overall condition of the machine before proceeding.