GE Range F2 Error Code — What It Means
The F2 or F20 code on a GE range signals that the oven temperature exceeded a preset safety threshold. GE’s published fault tables describe this as a runaway overtemperature condition, though the exact threshold is not disclosed in manufacturer documentation. Field repair sources report triggering temperatures around 615°F during normal baking and roughly 915°F during self-clean cycles, though these figures are not official GE specifications.
The code can appear during active cooking, self-clean, or even when the oven is idle in time-of-day mode. If the fault shows up only during cook or clean modes, the problem usually lies with the oven temperature sensor or its wiring. If the code appears even when the oven is idle, the electronic range control board is the more likely culprit.
Common Causes
- Failed oven temperature sensor The most common field cause is a sensor that has drifted out of specification or failed open or shorted, sending incorrect readings to the control board.
- Damaged or loose sensor wiring Broken conductors, corroded terminals, or loose connections in the harness between the sensor and control board can create false overtemperature signals.
- Defective electronic range control board The ERC may misread a good sensor or falsely trigger the overtemperature fault due to internal component failure or logic errors.
- Clogged ventilation or abnormal heat buildup Blocked vents or residual heat from a recent self-clean cycle can push oven temperatures high enough to trip the safety threshold.
- Control glitch requiring reset A transient software or memory fault in the control board can trigger the code once, though persistent F2 indicates a real hardware problem.
Step-by-Step Fix
- Kill power at the breaker before starting any work on the range.
- Reset the control by leaving power off for 3–5 minutes, then restore power. If the code returns immediately or during the next heating cycle, continue diagnostics.
- Locate the oven temperature sensor on the rear wall inside the oven cavity. It is a thin metal probe passing through the back panel.
- Remove the rear access panel of the range and unplug the sensor harness connector. Inspect the connector for burned pins, corrosion, or loose fit.
- Measure sensor resistance with a multimeter set to ohms, with the oven at room temperature. Field sources report a normal reading of approximately 1,080–1,090 Ω at room temperature, with some sources citing around 1,100 Ω.
- Replace the sensor if the resistance is significantly out of range or if the sensor shows an open or short. If the sensor tests good, verify continuity in the wiring harness from the sensor to the control board and repair any open circuits.
- Replace the electronic range control board if both the sensor and wiring test normal but the F2 code persists, especially if the code appears when the oven is idle in time-of-day mode.
Parts Often Needed
| Part | Notes |
|---|---|
| Oven temperature sensor (oven sensor probe) | Amazon | Confirm your model number to order the correct sensor and connector type for your GE range. |
| Electronic range control board (ERC / oven control board) | Amazon | Required if sensor and wiring test correctly but the fault persists. Match by model and serial number. |
When to Call a Pro
Call a qualified appliance technician if you are not comfortable working with live 240-volt circuits, if you cannot safely access the rear of the range, or if the fault persists after replacing the sensor. Technicians have model-specific resistance charts, wiring diagrams, and the tools to safely diagnose control board failures. If the code appears during self-clean and your oven has a door-lock mechanism, do not force the door. A pro can clear lock faults and verify that thermal safety systems are functioning correctly.