Samsung Microwave Error Code E-22

E-22 on a Samsung microwave indicates a temperature sensor short error. The control board has detected that the resistance across the temperature sensor terminals has dropped to an abnormally low level, consistent with a short circuit. The microwave stops operating to prevent unsafe heating conditions. The sensor or its associated wiring will need to be inspected and most likely replaced.

No, you should not continue using the microwave while E-22 is active. The error indicates the temperature sensing circuit is compromised, which means the unit cannot accurately monitor internal heat levels. Operating the microwave in this condition could lead to overheating or unsafe cooking results. The appliance should remain unplugged until the fault is diagnosed and repaired.

Repair costs vary depending on whether the issue is the sensor itself, the wiring harness, or in rare cases the control board. A temperature sensor replacement typically falls in the range of $20 to $60 for the part alone. Adding professional labor, total repair costs generally range from $80 to $200 depending on the technician's rates and the extent of the damage found during diagnosis.

A knowledgeable DIYer can attempt this repair by disconnecting the microwave from power, locating the temperature sensor, and testing resistance across both terminals with a multimeter. If the sensor reads near zero ohms, it needs to be replaced. However, microwave interiors contain a high-voltage capacitor that can store a lethal charge even when unplugged, so anyone not experienced with discharging capacitors should have a qualified technician perform this repair.

Unplugging the microwave for a few minutes and restoring power may temporarily clear the error code, but it will return if the underlying short condition in the temperature sensor or wiring is still present. A reset does not repair a failed sensor or damaged wiring. The fault must be physically corrected for the error to be permanently resolved.