Kenmore Refrigerator Error Code rS

The rS code indicates that Refrigerator Sensor 1, the temperature sensor located in the upper part of the fresh food compartment, has been detected as either shorted or open by the main control board. This sensor is a thermistor that the board uses to monitor compartment temperature. When its resistance falls outside the expected range, the board triggers this code. The fault can be in the sensor itself, the wiring harness, or the connector at the control board.

A reset by unplugging the refrigerator for a few minutes may temporarily clear the code, but it will return if the underlying fault is still present. If the cause was simply a loose connector at CON9, reseating it before restoring power may resolve the issue permanently. A persistent rS code after a reset means the sensor, wiring, or board needs further diagnosis and repair.

If the fix is simply reseating connector CON9, there is no parts cost involved. Replacing the thermistor sensor typically costs between $15 and $50 for the part alone, depending on the model. If a technician is needed for diagnosis and repair, total service costs including labor can range from $100 to $250 or more depending on your location and what components need to be replaced.

Yes, some causes are DIY-friendly. Start by unplugging the refrigerator, locating the Main PCB, and firmly reseating the connector labeled CON9. If the code returns after powering back on, you can test the thermistor sensor with a multimeter for an open or shorted reading. Replacing the sensor is a relatively straightforward repair for someone comfortable working with appliance wiring.

Operating the refrigerator with an active rS code is not recommended for extended periods. Without accurate temperature data from Sensor 1, the control board cannot properly regulate cooling in the upper compartment, which could lead to food spoilage. Check the actual temperature inside the fridge and avoid storing perishables until the fault is resolved.