Kenmore Refrigerator Error Code Er R2

Er R2 means the main control board has detected a short circuit or open circuit in the R2 temperature sensor, located in the lower section of the fresh food compartment. This sensor is a thermistor that monitors temperature by changing its electrical resistance. When the board cannot read a valid resistance from this sensor, it logs the Er R2 fault. It is classified as a secondary error and often appears alongside a primary fault code.

The refrigerator may continue to run while displaying Er R2, but without accurate temperature data from the lower compartment sensor, cooling may become inconsistent or unreliable. Check the actual temperature inside the compartment with a separate thermometer. If the temperature rises above 40 degrees Fahrenheit for more than two hours, perishable food safety becomes a concern and the unit should be repaired promptly.

A power reset may temporarily clear the Er R2 error from the display, but the code will return if the underlying wiring or sensor fault has not been corrected. Because Er R2 is a secondary error tied to a measurable circuit fault, the control board will re-detect the problem once it runs its diagnostics after power is restored. A permanent fix requires repairing or replacing the faulty sensor or wiring.

Many cases of Er R2 can be addressed without a service technician. Start by checking that the wiring connector between the R2 sensor and the main PCB is firmly seated and free of corrosion. If the connection is good, use a multimeter to test the sensor resistance. A reading of near 0 ohms or infinite resistance indicates a failed sensor that needs replacement, which is a straightforward repair for someone comfortable working inside the refrigerator cabinet.

If only the R2 thermistor sensor needs replacement, parts typically range from around 15 to 50 dollars depending on the specific model. If a main control board replacement is required, parts alone can range from 100 to 250 dollars or more. Adding professional labor will increase the total cost, generally ranging from 100 to 200 dollars for a service call and repair depending on your location.