GE Range Error Code F31x

F31x indicates that the oven temperature sensor circuit is reading above 2950 ohms, which the control board interprets as an open or broken circuit. At room temperature, a healthy sensor should measure approximately 1100 ohms. The fault typically points to a failed sensor probe, a broken wire in the harness, or damaged connector terminals. The range disables oven heating when this code appears because it cannot safely regulate temperature without accurate sensor data.

You should not use the oven while this code is active, as the range cannot monitor oven temperature and the heating function is typically disabled. Attempting to bypass the fault and operate the oven without a functioning temperature sensor could result in overheating or uncontrolled heating. Surface burners on a gas or electric range may still be usable, but the oven should remain off until the fault is resolved.

If only the oven temperature sensor needs replacement, parts typically cost in the range of $20 to $60 depending on the specific model, making it one of the more affordable oven repairs. If a technician is needed for diagnosis and installation, labor costs can add $75 to $150 or more to the total. In the less common scenario where the control board is at fault, parts and labor combined can range from $200 to $400 or higher.

Many homeowners and DIYers can resolve this fault by replacing the oven temperature sensor, which is a straightforward repair requiring only a screwdriver and a multimeter for confirmation. Start by disconnecting the sensor harness at the control board and measuring resistance across the sensor leads. If the reading is far above 1100 ohms or reads open (infinite resistance), the sensor needs replacement. If the sensor reads correctly, inspect the harness and terminals, which may require more comfort working with electrical connectors.

Resetting the range by cutting power at the breaker or unplugging it may temporarily clear the code, but it will return as soon as the control board re-checks the sensor circuit and finds the resistance still above 2950 ohms. A reset does not fix the underlying electrical fault. The sensor, wiring, or connector terminals must be inspected and repaired or replaced to permanently clear the code.