Kenmore Refrigerator Error Code Defrost Sensor

This error means the control board has detected an abnormal reading from the defrost temperature sensor, specifically an open circuit (cut or disconnected wire) or a short circuit in the sensor wiring. The defrost sensor is a thermistor located near the evaporator coil that tells the board when to end a defrost cycle. When the board cannot get a valid signal from this sensor, it flags the fault. The problem can stem from a loose connector, a failed sensor, or damaged wiring.

You can continue using the refrigerator for food storage in the short term, but a non-functioning defrost sensor can cause frost to accumulate on the evaporator coil over time. Excessive frost buildup will eventually restrict airflow and reduce cooling performance. It is best to address the fault promptly to avoid secondary issues with food safety or compressor strain.

Repair costs vary depending on the root cause. If only the connector needs reseating, there may be no parts cost and minimal labor. Replacing the defrost temperature sensor typically costs between $20 and $60 for the part, plus labor if a technician performs the work. If the control board needs replacement, costs can range from $100 to $300 or more for the part alone, making full diagnosis before parts ordering especially important.

Some causes are DIY-friendly, particularly if the issue is just a loose connector at CON6 on the control board. You can access the board, reseat the connector, and clear the fault without any parts. If the sensor itself has failed or the wiring harness is damaged, replacing those components requires basic electrical testing skills and comfort working inside the refrigerator cabinet, which is manageable for experienced DIYers.

A power reset may temporarily clear the error code from the display, but if the underlying fault in the sensor circuit is still present, the error will return. Resetting is useful as a diagnostic step to see whether the fault is intermittent, possibly pointing to a loose connection rather than a fully failed component. A permanent fix requires resolving the actual wiring or sensor problem.