JennAir oven displays F3-3; temperature readings are erratic.

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.

Possible Causes

Shorted sensor element, Sensor wires shorted to the chassis, Moisture or carbon tracking at the sensor connector.

Safety: Disconnect power before testing.

Test sensor: Remove and disconnect the temperature sensor, then measure its resistance. A very low reading (near 0 ohms) indicates a short circuit.
Inspect wiring path: Look for melted insulation or wires touching metal along the sensor's wiring harness route.
Clean connector: If there is carbon buildup or moisture at the connector, clean it with electrical contact cleaner and dry thoroughly.
Replace sensor/harness: Replace the sensor if it is shorted. If the wiring is damaged, repair it with high-temperature wire or replace the harness.

Medium 3/5

Oven Temperature Sensor

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