Bosch Range F31 Error: Oven Sensor Failure
What Does Bosch Range Error Code F31 Mean? Error code F31 means the oven temperature sensor is reporting incorrect readings. The oven may appear to work but actual temperature is wrong, causing food to burn or undercook. What You Can Do Verify with an oven thermometer. A difference of more than 25°F from the display […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. An oven with wrong temperature readings is unsafe — it could overheat. Do not use.
Can I reset the code?
No. The sensor needs replacement. A reset won't fix calibration drift.
When to stop immediately?
Stop if you notice: Temperature is significantly off, Food consistently burns or undercooks.
Symptoms You May Notice
Food burns or stays raw
The oven displays the correct temperature but actual temp is far different — food overcooks or undercooks.
Temperature seems wrong
An oven thermometer shows a dramatically different reading than the display.
Possible Causes
Drifted temperature sensor
The sensor has lost calibration and reports incorrect temperatures.
Requires ProfessionalPartial sensor wire damage
A partially broken wire causes intermittent incorrect readings.
Requires ProfessionalSafe Checks You Can Do
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1
Verify with oven thermometer
Place an oven thermometer inside and set to 350°F. Check if display matches the thermometer.
A difference of more than 25°F indicates a sensor problem.
Tools required
When to Call a Professional
Contact a qualified technician if:
- Sensor resistance doesn't match spec at known temperature
- Wire shows intermittent connection
- Board detects sensor drift
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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