Kenmore Refrigerator Error Code RT-Sensor

The RT-Sensor code means the control board has detected an abnormal signal from the room temperature sensor circuit. This is classified as a secondary error and is typically caused by a cut wire, short circuit, or loose connection in the sensor wiring. The first place to check is the CON5 connector, which links the room temperature sensor to the control board. Addressing the underlying wiring or sensor fault is necessary to clear the code.

The RT-Sensor code is a secondary error related to ambient temperature monitoring rather than a direct failure of the main cooling system. Your refrigerator may continue cooling in the short term, but without accurate room temperature data, the control board cannot optimize compressor and fan operation. It is best to address the fault promptly to avoid potential food safety issues caused by reduced efficiency or incorrect cooling behavior.

A power reset may temporarily clear the RT-Sensor code from the display, but the error will return if the underlying cause, such as a loose connector, cut wire, or faulty sensor, has not been repaired. Resetting without fixing the root problem can mask the fault and allow it to continue affecting refrigerator performance. A proper diagnosis and repair of the CON5 connection or sensor wiring is required for a lasting resolution.

Some causes are DIY-friendly, particularly checking and reseating the CON5 connector, which requires no special tools. If the connector is fine, diagnosing a cut or shorted wire requires a multimeter and the ability to trace the wiring harness. Replacing the room temperature sensor or wiring harness is a moderate repair that many experienced DIYers can complete, but if you are uncomfortable working with appliance wiring, a qualified technician should handle the repair.

If the fix is simply reseating the CON5 connector, there may be no parts cost at all. Replacing the room temperature sensor typically costs between $15 and $50 for the part. If a wiring harness section needs replacement, parts can range from $20 to $80. Adding professional labor, total repair costs generally fall between $75 and $200 depending on the extent of the damage and your location.