Samsung Microwave Error Code E-12 — Short Gas/Humidity Sensor Error
What this means
The E-12 error code indicates the humidity/gas sensor inside the microwave has a short circuit. This sensor monitors moisture levels during cooking for auto-cook and sensor-cook features. A shorted sensor sends incorrect readings to the control board, affecting automatic cooking functions. The microwave may still work in manual timed-cook mode.
Alternate codes: E12
Step-by-step fix
2 stepsPower cycle the microwave
Unplug the microwave or turn off the breaker for 60 seconds. Plug it back in and try a sensor cook cycle.
Steam buildup after cooking can temporarily affect the sensor — a reset may help.
Clean the interior
Wipe down the inside of the microwave thoroughly, paying special attention to the sensor area (usually on the top or side wall). Grease and food residue can cause false sensor readings.
Use a mild detergent solution, not abrasive cleaners.
When to call a professional
Microwave sensor replacement involves working near high-voltage capacitors that can store lethal charges even when unplugged. Professional service is strongly recommended for any internal microwave repair.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Humidity/Gas Sensor
Part #DE81-08985A · $15–$30
If sensor is shorted (requires professional installation)
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