Kenmore Refrigerator Error Code rS2

The rS2 code indicates that Refrigerator Sensor 2, the temperature sensor in the lower part of the fresh food compartment, has been detected as having a short or open circuit. It is a secondary diagnostic code, meaning it only appears when the refrigerator is placed into Display LED Check mode rather than showing on the standard display. The control board monitors the resistance of this thermistor and flags the code when the reading falls outside expected limits.

A faulty lower compartment sensor means the control board may not accurately monitor temperatures in that zone, which could lead to inconsistent cooling. Food safety could be compromised if temperatures drift outside safe ranges without the board detecting it. It is advisable to verify your refrigerator is holding proper temperatures with a standalone thermometer and to address the fault promptly.

A power reset may temporarily clear the code from the diagnostic log, but if the underlying fault with the sensor or wiring still exists, the code will return. Because rS2 is a secondary error only visible in Display LED Check mode, you would need to re-enter that mode to confirm whether it has cleared. Addressing the root cause, whether a loose connector, failed thermistor, or damaged wiring, is the only reliable way to permanently resolve the fault.

A knowledgeable DIYer can start by checking the CON9 connector for looseness or corrosion and reseating it, which sometimes resolves the fault without any parts. Measuring resistance across the Gray to Gray wires at CON9 with a multimeter will confirm whether the sensor or wiring is at fault. Replacing a thermistor is a straightforward repair for those comfortable with basic appliance disassembly, though tracing and repairing wiring damage is more involved.

If the fix is simply reseating the CON9 connector, there is no parts cost involved. Replacing the lower compartment thermistor typically involves parts costs in the range of $15 to $60 depending on the specific model. If professional labor is needed, total repair costs including diagnosis and parts can range from $100 to $250 or more depending on your location and the technician's rates.