mypros+
Error code reference

GE Range Error Code F31x

Open oven sensor (over 2950 ohms).

GE codesGE range codes

Open oven sensor (over 2950 ohms).

First step from the service manual

a) Disconnect sensor harness from control and measure resistance; should be ~1100 ohms at room temperature with 2 ohms per degree change. b) Look for damaged harness terminals/pins if resistance is OK.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for F31x.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What F31x means on a GE range

The F31x error code on a GE range indicates an open circuit condition in the oven temperature sensor circuit. The control board monitors the resistance of the oven sensor continuously during operation. When the measured resistance rises above 2950 ohms, the control interprets this as an open or broken circuit and triggers the F31x fault. Under normal conditions at room temperature, the sensor should read approximately 1100 ohms, and resistance increases at a rate of roughly 2 ohms per degree of temperature rise.

The oven temperature sensor, sometimes called an RTD (resistance temperature detector), is a probe mounted inside the oven cavity that reports real-time temperature data to the control board. The control uses this data to regulate the bake and broil elements. When the sensor circuit reads excessively high resistance, the board can no longer accurately monitor oven temperature and shuts down the heating function to prevent damage or unsafe operation.

The fault can originate from three areas: the sensor probe itself, the wiring harness connecting the sensor to the control board, or the connector terminals at either end of that harness. A physically damaged sensor, corroded pins in the harness connector, a broken wire in the harness, or a loose terminal can all push the measured resistance above the 2950-ohm threshold and trigger this code. Identifying which component is responsible requires resistance measurement at the control board connector before replacing any parts.

Source: manufacturer service documentation.

Common causes of F31x

  1. 01

    Failed oven temperature sensor

    Part replacement

    The sensor probe itself has failed internally, causing its resistance to read above 2950 ohms instead of the expected ~1100 ohms at room temperature. Disconnect the sensor harness at the control board and measure resistance across the sensor leads to confirm.

  2. 02

    Broken or damaged sensor harness wire

    Part replacement

    A wire in the harness running from the sensor to the control board has broken or burned through, creating an open circuit. Visually inspect the harness for scorched insulation, pinched sections, or visible breaks, and use a multimeter to check continuity along each wire.

  3. 03

    Corroded or damaged connector terminals

    Wiring / connection

    The harness connector pins at the control board or sensor end may be corroded, bent, or pushed back, increasing circuit resistance beyond the acceptable limit. Inspect each terminal carefully for discoloration, deformation, or poor seating.

  4. 04

    Loose harness connection

    Wiring / connection

    The sensor harness connector may have vibrated loose from the control board or from the sensor body, creating an intermittent or fully open circuit. Firmly reseat all connectors and retest the range before assuming a component has failed.

  5. 05

    Control board fault

    Part replacement

    If the sensor measures correctly at ~1100 ohms with intact wiring and secure connections, the control board itself may be misreading the sensor circuit. This is the least common cause and should only be considered after all other components have been ruled out.

See the test procedure for each cause

Frequently asked questions about F31x

What does F31x mean on a GE range?
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.
Can I fix the F31x error myself, or do I need a technician?
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.
Is it safe to use my GE range while the F31x code is displayed?
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.
Will resetting the range clear the F31x error code?
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.
How much does it cost to repair an F31x error on a GE range?
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.

Related GE range codes

All GE range codes
View all 303 GE range codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass