F21Warning
Maytag Oven/Range F21 Error Code
A generic oven sensor error indicating a problem with the temperature sensing circuit.
Common causes
- Faulty oven temperature sensor
- Loose or corroded connection
- Control board issue
How to fix it
- Reset the range by turning off power at the breaker for 5 minutes.
- Check the sensor connector on the control board for a secure fit.
- Inspect the sensor probe for damage or buildup.
- Measure sensor resistance; if out of spec, replace the sensor.
⚠ When to call a pro: If sensor and connections are fine, the control board likely needs replacement.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.