F3-3
JennAir
Oven Temperature Sensor Shorted
JennAir oven shows F3-3; temperature readings are erratic or oven shuts off
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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
Shorted sensor probe, Sensor wires shorted together, Melted harness insulation, Control board sensor input failure
How to Fix / Troubleshooting
Safety: Turn off power at the breaker.
- Inspect sensor and harness: Remove the rear panel and inspect the sensor wiring where it enters the oven cavity. Look for melted or pinched wires.
- Test sensor: Disconnect the sensor and measure resistance. A shorted sensor will read very low resistance (near 0 ohms). Replace if shorted.
- Repair wiring: If the harness is shorted, cut out damaged sections and splice with high-temperature wire and proper connectors, or replace the harness.
- Control board: If sensor and wiring are good, the control board sensor circuit may be shorted and require replacement.
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Repair Difficulty
Medium
3/5
Required Part
Oven Temperature Sensor
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