GE Refrigerator Error Code F-SENSOR

F-SENSOR indicates a freezer compartment temperature sensor error. The main control board has detected that the sensor circuit is open, shorted, or producing a temperature reading above 122°F or below -58°F. These conditions prevent the board from accurately monitoring freezer temperature. The fault most commonly originates at the sensor itself, its wiring harness, or the connector at the PCB.

A reset may temporarily clear the code, but if the underlying fault still exists, the error will return once the control board runs its diagnostic cycle again. Resetting is useful for ruling out a one-time communication glitch, but it does not fix a faulty thermistor, damaged wiring, or a bad connector. The root cause needs to be identified and corrected for the code to stay clear.

Repair costs vary depending on the failed component. A replacement freezer thermistor typically costs between $15 and $50 for the part alone. If the main PCB requires replacement, parts can range from $100 to $300 or more depending on the model. Adding professional labor, expect a total repair estimate anywhere from $100 to $400 depending on the diagnosis. Connector and wiring repairs may cost less if no parts need to be ordered.

Some causes are DIY-friendly, particularly checking and reseating the sensor connector at the main PCB. If the connector is clean and fully seated but the error persists, you can test the voltage at the PCB sensor terminal, which should read between 1.0V and 4.5V. A thermistor replacement is also a straightforward repair for someone comfortable working inside a refrigerator. Main PCB replacement is more involved and may warrant a professional technician.

Operating the refrigerator with an active F-SENSOR error is not recommended for extended periods. Without a reliable freezer temperature signal, the control board cannot properly regulate the cooling cycle, which may result in inadequate freezing or excessive compressor run time. Food safety can be compromised if the freezer is not maintaining proper temperatures. Address the fault as soon as possible to avoid food spoilage or further component wear.