Kenmore Refrigerator Error Code rd

The rd code means the refrigerator defrost sensor is being read as open or shorted by the main control board. This sensor monitors evaporator coil temperature during the defrost cycle. When it fails or loses electrical continuity, the board cannot safely manage defrost operations and displays this fault code.

Short-term use may be possible, but the rd error means the defrost cycle cannot operate correctly. Over time, this can cause excessive frost buildup on the evaporator coils, reducing cooling efficiency and potentially leading to food spoilage. It is best to address the fault promptly rather than continue running the refrigerator in this condition.

A power reset may temporarily clear the rd code from the display, but the fault will return if the underlying problem with the defrost sensor or its wiring has not been corrected. Resetting the unit does not repair a failed sensor or a wiring fault. The code should be treated as an active problem requiring diagnosis rather than a one-time glitch.

A knowledgeable DIYer can start by checking the wiring connections at the defrost sensor and at the main PCB for looseness or corrosion, which is a common and straightforward fix. If the wiring is intact, testing the defrost sensor with a multimeter is the next step. Replacing the sensor is generally a manageable repair, but if the main PCB is the cause, professional diagnosis is recommended before purchasing that part.

If the fix is simply reseating a loose wiring connector, there may be no parts cost at all. Replacing the defrost sensor typically costs between $20 and $60 for the part, plus labor if a technician is hired. If the main PCB requires replacement, total repair costs including parts and labor can range from $150 to $400 or more depending on the specific model.