LG Refrigerator Error Code Outer sensor open

This error means the control board has detected an open circuit in the ambient (outer) temperature sensor. The board expects a resistance signal from the sensor corresponding to a real-world temperature, but the reading has fallen below the valid threshold of -50°C, which the board interprets as a broken or disconnected circuit. The fault can originate from the sensor itself, the wiring, or a connector in the harness.

A reset may temporarily clear the error code from the display, but the fault will return if the underlying problem has not been fixed. The control board will re-detect the open circuit as soon as it polls the sensor again. Clearing the code is not a repair; the sensor or wiring issue must be resolved first.

If only the ambient temperature sensor needs replacement, parts typically range from $15 to $50 depending on the model, making it a relatively low-cost DIY repair. If a professional technician is needed, the total cost including labor could range from $80 to $200 or more. Wiring repairs, if required, will vary based on the extent of the damage.

Yes, if you have basic electrical diagnostic skills. Start by locating the outer sensor, disconnecting it, and measuring its resistance with a multimeter. An infinite or open reading means the sensor needs to be replaced. If the sensor checks out, trace the wiring harness for breaks or loose connectors and repair or reseat as needed.

The refrigerator may continue running in some capacity, but without a valid ambient temperature reading the control board cannot make accurate decisions about cooling cycles and compressor operation. This could result in inefficient cooling or food not being kept at safe temperatures. It is best to address the fault promptly rather than rely on the unit to perform normally.