Electric oven shows F3 and does not heat correctly, temperature may be erratic.

Safety first: Disconnect power before accessing the rear of the oven.

• Check sensor connection: Locate the temperature sensor at the rear of the oven cavity. Ensure its connector to the wiring harness is secure.
• Test sensor continuity: Disconnect the sensor and measure resistance at room temperature. If the meter shows OL (open circuit), replace the sensor.
• Inspect harness: Follow the harness from the sensor to the control board, checking for cuts, burns, or loose connectors. Repair or replace as needed.

Note: After replacing the sensor, clear the error by disconnecting power for a few minutes, then test the oven.