GE Range Error Code F3

F3 on a GE range means the control board detected an open circuit in the oven temperature sensor circuit, with resistance reading above 2700 ohms. The oven temperature sensor (RTD probe) should read approximately 1100 ohms at room temperature. The fault points to a failed sensor, broken wiring, or a bad connection between the sensor and the control board.

Start by disconnecting power to the range, then disconnect the sensor connector at the control board and measure resistance across the sensor leads at that connector. A reading near 1100 ohms at room temperature means the sensor and harness are good and the control board may be at fault. A reading well above 2700 ohms or an open circuit points to a failed sensor or broken wire. Also check each sensor lead to ground for shorts and inspect the connector terminals for corrosion or deformation. In most cases replacing the oven temperature sensor resolves the code.

Disconnect power to the range and unplug the sensor connector from the control board. Use a multimeter set to ohms and measure resistance across the two sensor terminals at the control connector. At a room temperature of approximately 72°F, a functional sensor reads close to 1100 ohms. A reading significantly higher than 1100 ohms or an open reading (OL) confirms the sensor or its wiring has failed. You can also test resistance directly at the sensor body itself to isolate whether the sensor or the wiring harness is the problem.

The stovetop burners may still function, but you should not attempt to use the oven while F3 is active. The control board has no reliable temperature data, which means it cannot regulate oven heat safely. Operating the oven in this condition risks overheating. Address the fault before using the oven bake or broil functions.

A replacement GE oven temperature sensor typically costs between $20 and $60 for the part and is one of the easier range repairs to perform, requiring only a screwdriver in most models. If the wiring harness is damaged, a harness repair or replacement adds cost. If the control board is the cause, board replacement can run $150 to $350 or more for the part alone. A technician service call will add $75 to $150 in labor depending on your area.