F3
RCA
Oven Temperature Sensor Circuit Open
Display shows F3 and oven will not heat or shuts down shortly after starting a cycle.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Open oven temperature sensor (RTD), Broken sensor harness, Loose or corroded sensor connector at control board, Damaged wiring from heat exposure
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker before testing or replacing components.
- Access sensor: Locate the oven temperature sensor inside the oven (back wall). Remove the mounting screws and gently pull the sensor forward to access the connector.
- Test resistance: With the sensor disconnected, measure resistance with a multimeter. At room temperature it should be ~1050–1100 Ω. If the reading is infinite (open) or far off, replace the sensor.
- Check harness: If the sensor tests good, inspect the harness from the sensor to the control board for breaks or burnt insulation. Repair or replace the harness as needed.
- Reconnect and test: Reconnect the sensor, restore power, and run a bake cycle to confirm the error is cleared.
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Repair Difficulty
Medium
3/5
Required Part
Oven Temperature Sensor
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