LG range shows F23 and oven may not heat or may shut off.

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

Open sensor circuit, Broken sensor lead, Loose connector at control, Damaged harness

Safety first: Disconnect power at the breaker.

Inspect sensor connection: Access the sensor connector and ensure it is fully seated. Reseat it firmly.
Test sensor continuity: Disconnect the sensor and measure resistance. An open reading (OL) indicates a broken sensor; replace it.
Check harness continuity: If the sensor is good, test continuity from the sensor connector to the control board connector. Repair or replace any open wires.
Control board: If wiring and sensor are good but F23 persists, replace the main control board.

Medium 3/5

Oven Temperature Sensor Probe

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