GE Oven Error Code F3-E0

F3-E0 indicates that the lower cavity temperature sensor circuit has opened, meaning the control board cannot read a valid resistance signal from the sensor. The lower oven sensor should measure approximately 1080 ohms at 70 degrees Fahrenheit, increasing by 2 ohms per degree Fahrenheit. When the circuit opens, the oven stops operating normally to prevent unsafe heating. The fault points to a failed sensor, a wiring issue, or in rare cases a problem with the control board itself.

No, you should not attempt to use the oven while this fault is active. The control board depends on the lower cavity sensor to regulate temperature accurately. Operating the oven without valid sensor feedback could result in uncontrolled heating or failure to heat at all, both of which are unsafe conditions.

Repair costs depend on what component has failed. A replacement lower oven temperature sensor typically costs in the range of $20 to $60 for the part, making it one of the more affordable fixes. If the control board needs to be replaced due to a welded relay, parts alone can range from $150 to $350 or more, and professional labor will add to that total.

Yes, this repair is within reach for a technician or a confident DIYer with a multimeter. After disconnecting power, check the sensor connector for looseness or corrosion, then measure the sensor resistance to see if it falls near 1080 ohms at room temperature. If the sensor reads open or far out of range, replacing it is typically a straightforward swap. If the sensor tests good, further inspection of the wiring harness and control board is needed.

Disconnecting power may temporarily clear the code from the display, but the fault will return as soon as the oven attempts to operate and the control board again fails to read a valid signal from the lower sensor. A reset does not address the underlying problem, which requires diagnosing and repairing the sensor circuit.