Jenn-Air Oven F3-E3 Error: Upper Sensor Short
What Does Jenn-Air Oven Error Code F3-E3 Mean? Error code F3-E3 on a Jenn-Air wall oven indicates the upper oven temperature sensor has a short circuit. The sensor returns a resistance value lower than expected, which the control board interprets as an abnormally high oven temperature. Common Causes The sensor probe can develop an internal […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. The oven cannot regulate temperature with a shorted sensor. It may underheat, making cooking unreliable.
Can I reset the code?
Yes. A reset clears the error, but the shorted sensor will trigger it again during the next heating cycle.
When to stop immediately?
Stop if you notice: Oven clearly not reaching set temperature, Temperature reading does not match thermometer.
Symptoms You May Notice
Upper oven underheats or will not heat
The oven does not reach the set temperature because the control thinks it is already hotter than it is.
Temperature display jumps erratically
The shown temperature fluctuates wildly between high and normal readings.
Oven element cycles off too quickly
The heating element turns off seconds after starting because the board reads a falsely high temperature.
Possible Causes
Internally shorted sensor
The RTD probe has an internal short, giving a low resistance that the board interprets as high temperature.
Requires ProfessionalWire insulation breakdown
Sensor wires with damaged insulation are shorting to each other or to grounded metal.
Requires ProfessionalSafe Checks You Can Do
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1
Check sensor wire routing
Turn off the breaker. Look inside the upper oven for any sensor wires touching oven walls or rack supports.
Bare wire touching grounded metal is the most common cause of a short circuit.
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2
Test sensor resistance
Disconnect the sensor and measure resistance — expect about 1,080-1,100 ohms at room temperature.
A reading below 900 ohms confirms the short.
Tools required
When to Call a Professional
Contact a qualified technician if:
- Sensor resistance well below 1,000 ohms
- Wire insulation cracked or melted
- Short to ground when tested
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