What does F3 mean?
Oven temperature sensor wire is open or disconnected.
Common causes
- Disconnected sensor plug
- Broken sensor wire
- Failed sensor
Diagnostic & testing steps
- 1. Check sensor connector at back of oven
- 2. Test sensor resistance: ~1080 ohms
- 3. Inspect wiring for breaks
- 4. Replace sensor if open
OEM parts & part numbers
Oven Temperature Sensor
Part numbers: WB21X5301
Try DiagBuddy AI free — instant 30-second diagnostics for technicians.