What does F4 mean?
Oven temperature sensor circuit is shorted.
Common causes
- Shorted sensor
- Pinched wiring
- Moisture
Diagnostic & testing steps
- 1. Test sensor resistance - should not be near 0
- 2. Check wiring for damage or pinching
- 3. Check for moisture on connector
- 4. Replace sensor
OEM parts & part numbers
Oven Temperature Sensor
Part numbers: WB21X5301
Try DiagBuddy AI free — instant 30-second diagnostics for technicians.