LG Refrigerator Error Code FreshFood Room Sensor Error

This error means the main control board has detected a problem with the temperature sensor circuit in the fresh food compartment. The fault could be a disconnected connector, a wiring issue such as a cut or short-circuit, or a failed thermistor sensor. The control board checks for a voltage signal between 1.0V and 4.5V at specific PCB connectors, and any reading outside that range triggers the error. Until the sensor circuit is repaired, the refrigerator may not regulate fresh food compartment temperatures correctly.

The refrigerator may continue to run, but without accurate temperature sensing in the fresh food compartment, it cannot guarantee proper cooling in that zone. Food safety can be at risk if temperatures rise above safe levels without triggering corrective cooling cycles. It is best to address the error promptly and monitor food temperatures in the meantime.

Repair costs vary depending on the cause. If only a connector needs reseating, there may be no parts cost and a minimal labor charge. Replacing a fresh food thermistor sensor typically involves a parts cost in the range of $15 to $60, plus labor. If the main PCB or a larger wiring harness requires replacement, total repair costs can range from $150 to $400 or more depending on parts pricing and local labor rates.

Some causes, such as a loose connector, can be resolved without special tools by reseating the connector at the main PCB. However, diagnosing a failed sensor, short-circuit, or damaged wiring harness requires a multimeter and the ability to safely access internal components and PCB connectors. If you are not comfortable working around control board connectors and live circuits, a qualified appliance technician is recommended.

A power reset may temporarily clear the error display, but if the underlying fault in the sensor circuit is still present, the error will return once the control board runs its diagnostics again. Resetting does not repair a failed sensor, damaged wire, or loose connector. A proper repair addressing the root cause is necessary for a permanent fix.