LG Washer Error Code Ec

The Ec code on an LG washer indicates a thermistor error. It appears when the control board detects that the voltage signal from the thermistor circuit is abnormal, specifically below 0.2V or above 4.5V. The thermistor is the component responsible for monitoring temperature during the wash cycle, and this code means its signal has fallen outside the acceptable operating range.

It is not recommended to continue running the washer while the Ec error is active. The thermistor monitors temperature during the wash cycle, and if it is not functioning correctly, the machine cannot properly regulate heat-related functions. Continuing to run the washer could lead to improper cycle performance or potential overheating depending on how the fault affects the circuit.

Repair costs vary depending on the root cause. A replacement thermistor is generally an affordable part, with part costs typically ranging from around $15 to $50 depending on the specific model. If the issue is a damaged wiring harness or control board, parts and labor costs will be higher, potentially ranging from $100 to $300 or more when professional service is involved. Inspecting connectors and reseating loose wiring costs nothing if you are comfortable doing it yourself.

Turning the power switch off and back on is the recommended first step for clearing the Ec code, and it may resolve the issue if the fault was caused by a temporary signal anomaly. However, if the underlying problem is a failed thermistor, damaged wiring, or a loose connector, the code will return after the reset. A reset alone is not a permanent fix if there is a hardware fault in the thermistor circuit.

Start by turning the power switch off completely and then powering the unit back on to see if the code clears. If it returns, inspect the wiring harness and connectors leading to the thermistor for loose connections, corrosion, or visible damage. If the wiring appears intact, test the thermistor output voltage against the expected 0.2V to 4.5V range. A thermistor reading outside that range indicates the component needs to be replaced.