Frigidaire Refrigerator Error Code R-SENSOR

R-SENSOR indicates a refrigerator compartment room sensor error. The main PCB has detected that the voltage signal from the fresh food compartment thermistor has fallen outside the expected range of 4.5V to 1.0V. This can be caused by an open circuit, a short circuit, a connector failure, or an actual compartment temperature above 122°F or below -58°F.

The error itself is not a safety hazard, but it does mean your refrigerator's control board cannot reliably monitor compartment temperature. If the cooling system is also malfunctioning, food inside the refrigerator may not be kept at a safe temperature. Check the actual compartment temperature and move perishables if the unit is not cooling properly.

Unplugging the refrigerator for a few minutes and restarting it may temporarily clear the error, but the code will return if the underlying fault is still present. A reset is useful for confirming whether the fault is intermittent, such as a loose connector, versus a hard component failure. Resolving the code permanently requires identifying and correcting the root cause in the sensor circuit.

A knowledgeable DIYer can diagnose and often fix this error by checking the sensor connector at the main PCB for corrosion or loose fit, inspecting the wiring harness for damage, and measuring the voltage at the PCB sensor pin. If the thermistor itself has failed, replacing it is a straightforward repair that requires basic tools and a compatible replacement part. Main PCB replacement is more involved and may warrant a professional technician.

Repair cost depends on the root cause. A replacement thermistor is generally an affordable part, typically in the range of $15 to $50. If the main PCB needs replacement, parts alone can range from $100 to $300 or more depending on the model. Adding professional labor will increase the total, typically bringing a full repair to between $150 and $400.