F21Warning
Electrolux Oven/Range F21 Error Code
The oven temperature sensor has failed or is reading incorrectly.
Common causes
- Open or shorted sensor
- Sensor out of calibration
- Wiring issue
How to fix it
- Check sensor continuity and resistance (should be ~1100 ohms).
- Inspect wires for damage.
- Replace sensor if resistance is incorrect.
⚠ When to call a pro: If replacing sensor does not clear code, control board may need replacement.
Part links are affiliate links — as an Amazon Associate we may earn a small commission at no extra cost to you.
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.