LG Dryer Error Code LE3

LE3 means the dryer's control board has detected an open or short circuit in the drum-in heater thermistor. This thermistor monitors temperature in the heating system and sends resistance-based feedback to the control board. When that signal is missing or out of range, the dryer triggers LE3 and typically stops the heating cycle. The fault can originate from a loose connector, a failed thermistor, or damaged wiring.

No, you should not continue using the dryer while this error is active. The LE3 code means the dryer cannot accurately monitor drum temperature, which is a core safety function. Running the dryer without a working temperature sensor increases the risk of overheating. Discontinue use until the fault is diagnosed and corrected.

A power reset, such as unplugging the dryer for a few minutes, may temporarily clear the LE3 code, but it will return if the underlying fault is still present. The thermistor circuit needs to be physically inspected and tested to resolve the issue. Relying on resets without fixing the root cause will not restore safe dryer operation.

In many cases, yes. Start by unplugging the dryer and inspecting the thermistor connector to make sure it is fully and correctly seated, since a loose connection is the most common cause. If the connector is secure, a multimeter can be used to test the thermistor's resistance and the continuity of the wiring harness. Replacing a thermistor is a straightforward repair for someone comfortable working inside an appliance.

If the fix is simply reseating a loose connector, there is no parts cost involved. Replacing the drum-in heater thermistor typically costs between $15 and $50 for the part, depending on the specific model. If professional labor is needed, total repair costs including parts and service can range from $100 to $250. A damaged control board would be the most expensive scenario, with parts alone ranging from $100 to $300 or more.