Oven shows F4 and may not regulate temperature correctly.

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, Pinched sensor wiring, Moisture in sensor connector, Shorted sensor input on EOC

Safety first: Turn off power before testing.

Inspect wiring: Check the sensor harness for pinched or melted insulation where it passes through the oven wall.
Measure resistance: Test the sensor at room temperature. A very low resistance or near 0 Ω indicates a short; replace the sensor.
Dry connectors: If moisture is present in the connector, dry thoroughly and apply a small amount of dielectric grease to protect contacts.
Control board: If a known-good sensor still results in F4, the EOC is likely faulty and should be replaced.

Medium 3/5

Oven Temperature Sensor (RTD Probe)

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