LG Washer Error Code Water level sensor error

This error means the water level sensor has failed to send a valid signal to the washer's control board for more than 15 seconds. The sensor uses air pressure from a hose connected to the tub to detect how much water is present. When that signal is lost, the washer stops and locks out controls to prevent operating with an unknown water level. Only the ENCENDER (power) button remains functional while the error is active.

No, you should not attempt to continue using the washer while this error is active. Because the machine cannot determine the water level inside the drum, it risks overfilling, which can cause water damage, or running a cycle without adequate water, which can damage the motor and components. The washer disables all controls except the power button for this reason.

If the problem is a clogged or disconnected air hose, the repair costs nothing beyond your time. Replacing the water level sensor itself typically costs between $20 and $60 for the part, plus labor if you use a technician. A main control board replacement, if needed, is the most expensive possibility, with parts generally ranging from $100 to $250 or more depending on the model, plus any applicable labor charges.

In many cases, yes. Start by pressing the power button to reset the machine and see if the error clears. If it returns, inspect the air pressure hose connected to the water level sensor for kinks, clogs, or loose connections, as these are the most common causes and require no special tools. If the hose is in good condition, testing the sensor and wiring harness with a multimeter is the next step, which is within reach for a confident DIYer.

Pressing the ENCENDER (power) button will reset the display and may clear the error temporarily. However, if the underlying cause, such as a clogged hose, faulty sensor, or wiring problem, has not been corrected, the error will return as soon as the machine attempts to fill with water. A reset alone is not a fix and should be followed by a proper inspection.