Jenn-Air Microwave F2 Error: Sensor Short Circuit
What Does Jenn-Air Microwave Error Code F2 Mean? Error code F2 on a Jenn-Air microwave indicates the cavity temperature sensor has a short circuit. The sensor is reading a false high temperature, causing the control board to shut down heating functions as a safety precaution. Common Causes The sensor probe can develop an internal short […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. Manual microwave heating typically works. Avoid convection and sensor modes until repaired.
Can I reset the code?
Yes. A reset clears the display. The error will return when convection or sensor cooking is attempted.
When to stop immediately?
Stop if you notice: Microwave heating also fails, Sparking or arcing.
Symptoms You May Notice
Convection mode shuts off immediately
The convection feature turns off as soon as it starts because the board reads an already-high temperature.
Display shows abnormally high temperature
The temperature readout displays an unrealistically high number right from startup.
Cooling fan runs continuously
The internal fan operates at full speed because the system thinks the cavity is overheated.
Possible Causes
Shorted sensor probe
The thermistor has an internal short circuit giving an abnormally low resistance reading.
Requires ProfessionalDamaged sensor wiring
Sensor wires are shorting to each other or to ground.
Requires ProfessionalSafe Checks You Can Do
-
1
Power cycle the microwave
Turn off the breaker for 5 minutes.
Basic microwave functions may still work.
-
2
Test basic heating
Try manual microwave mode to verify core functionality.
Manual power-level heating bypasses the temperature sensor.
When to Call a Professional
Contact a qualified technician if:
- Sensor resistance far below specification
- Wiring shows damage or bare spots
- Short to ground detected
Need Professional Help?
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