Kenmore Refrigerator Error Code R1 R5 ON

R1 R5 ON indicates that the ambient room temperature sensor, called the RT sensor, has been detected as either open circuit or short circuit by the refrigerator's control board. This means the control board is not receiving a valid temperature reading from that sensor. The refrigerator may not cool efficiently until the fault is resolved. A technician will need to test the sensor and its wiring to pinpoint the cause.

A faulty ambient sensor can interfere with how accurately the refrigerator regulates its cooling cycles, which may lead to food safety concerns over time. It is best to address the error promptly rather than continue operating the unit with the fault present. Monitor food temperatures closely if you must continue using the refrigerator before the repair is completed.

Repair costs vary depending on whether the issue is a failed sensor, damaged wiring, or a faulty control board. Sensor replacement parts typically fall in the range of $15 to $60, while control board replacement can range from $100 to $300 or more for parts alone. Adding professional labor will increase the total cost, generally ranging from $100 to $250 depending on your location and the extent of the repair.

Start by inspecting the RT sensor and its wiring harness for any visible damage, loose connectors, or corrosion. Use a multimeter to check the sensor's resistance and verify it falls within the expected range for the current room temperature. If the sensor reads open or shorted, it will need to be replaced. If the sensor and wiring both test correctly, the control board may need to be evaluated.

A reset may temporarily clear the error code from the display, but the code will return if the underlying sensor fault has not been repaired. Simply resetting the refrigerator does not fix an open or shorted sensor or damaged wiring. The root cause must be diagnosed and corrected for the error to stay cleared.