Maytag Refrigerator Error Code ES

The ES error code on a Maytag refrigerator means the electronic control board has detected a shorted thermistor in the temperature sensing circuit. A thermistor is a small sensor that monitors temperature by changing its electrical resistance. When the sensor shorts out, its resistance drops to near zero and the control board can no longer read accurate temperature data, triggering the ES code.

With a shorted thermistor, the control board cannot accurately monitor or regulate temperatures inside the refrigerator. This can lead to improper cooling and potential food safety concerns. It is best to address the fault promptly and avoid relying on the unit to maintain safe food storage temperatures until the repair is complete.

Resetting the refrigerator by unplugging it or cycling power may temporarily clear the ES code from the display, but the code will return if the underlying thermistor fault is still present. A reset does not repair a shorted thermistor or damaged wiring. The root cause must be diagnosed and corrected for the error to be permanently resolved.

A knowledgeable DIYer can diagnose this code by using a multimeter to measure the resistance of the thermistor. If the reading is at or near zero ohms, the thermistor should be replaced. The wiring harness and connectors should also be inspected for pinching, corrosion, or moisture. If you are not comfortable working with electrical components inside a refrigerator, a qualified appliance technician is recommended.

If only the thermistor needs replacement, the part itself is generally inexpensive, typically in the range of $15 to $50 depending on the specific sensor. If professional labor is needed, total repair costs including parts and labor can range from $100 to $250. If the wiring harness or control board is involved, costs may be higher.