Kenmore Refrigerator Error Code rt

The RT code means the room temperature, or ambient, sensor has been detected as open or shorted by the main control board. This sensor monitors the surrounding air temperature so the refrigerator can adjust its operation accordingly. The fault indicates the sensor circuit is either broken or has an unintended electrical connection. The first step is to check all wiring connections at the sensor and at the main PCB.

The refrigerator may still run while displaying this code, but it cannot accurately optimize its operation without a functioning ambient sensor. Food safety depends on whether the refrigerator is still maintaining proper internal temperatures. Monitor the interior temperature closely and if cooling appears affected, minimize the time the code goes unresolved.

Repair costs vary depending on the root cause. If only a wiring connection needs to be reseated or cleaned, the cost may be minimal or limited to a service call fee, typically in the range of $75 to $150. Replacing the ambient sensor itself usually costs between $20 and $60 for the part, plus labor if a technician is used. A main PCB replacement is the most expensive scenario, generally ranging from $150 to $400 or more depending on the model.

In many cases, yes. Start by unplugging the refrigerator and inspecting the wiring connections between the ambient sensor and the main PCB, reseating any loose connectors. If connections look good, use a multimeter to test the sensor for proper resistance and check the harness for continuity. If a damaged wire or failed sensor is found, those are parts a DIYer with basic electrical skills can often replace.

A reset may temporarily clear the code, but it will return if the underlying fault in the sensor circuit has not been corrected. Unplugging the unit for a few minutes and restoring power can reset the board, but the code will reappear as soon as the control board detects the open or shorted sensor condition again. A lasting repair requires diagnosing and correcting the wiring or sensor issue.