GE Oven Heats Too Hot - Causes & Fix

GE Oven Heats Too Hot — What’s Happening

When your GE oven heats too hot, the actual cavity temperature has climbed above the setpoint you selected. GE defines this condition as exceeding a preset safety threshold, and it often triggers an F2 or F20 error on the display. The oven may lock out, refuse to maintain lower temperatures, or simply run hotter than the dial indicates.

The problem almost always traces to either a bad temperature sensor feeding incorrect readings to the control board, or to a stuck relay on the board itself that keeps the bake or broil element energized. Less often, blocked airflow or a failed cooling fan lets heat build up beyond normal limits.

Jump to Fix

Most Likely Causes

• Failed oven temperature sensor The sensor feeds temperature data to the control board, and when it drifts out of range or shorts the board can’t regulate heat correctly.
• Stuck relay on the electronic control board A welded or fused bake or broil relay keeps the heating element powered even when the board tries to cycle it off.
• Damaged sensor wiring harness or connector Pinched, melted, or corroded wiring between the sensor and control board can mimic sensor failure or create intermittent faults.
• Blocked airflow or failed cooling fan Obstructed vents or a non-running fan prevent heat from escaping the cavity, causing the oven to overheat even if the elements cycle normally.
• Intermittent short in the sensor circuit A loose terminal or cracked insulation can create sporadic readings that confuse the control and cause overheating episodes.

How to Diagnose and Fix

1. Disconnect power at the breaker or unplug the range, then let the oven cool completely before opening any panels.
2. Locate the oven temperature sensor, usually a metal probe extending into the upper rear or side wall of the cavity, and inspect the probe and harness for visible damage, disconnection, or scorched wiring.
3. Disconnect the sensor leads and use an ohmmeter to measure resistance at room temperature (expect roughly 1,000 to 1,080 ohms at 70–72°F for most GE sensors).
4. If the sensor reads out of spec or open, replace the sensor and re-test the oven at a mid-range setpoint to verify stable operation.
5. If the sensor resistance is good but the overheating returns, disconnect the sensor plug at the control board and restore power briefly; if the fault reappears immediately the board relay is likely stuck and the control board needs replacement.
6. Check that the cooling fan (if your model has one) runs during bake cycles and that rear or side vents are not blocked by foil, pans, or debris.
7. After replacing any component, run a full bake cycle at 350°F and monitor cavity temperature with an oven thermometer to confirm the repair.
8. If the oven still overheats after sensor and board checks, consult a technician to inspect the control-board relay contacts under power or to trace intermittent wiring faults.

Parts You Might Need

Related Error Codes

If your appliance also shows a code on the display, these match this problem:

• Ge Oven F0 error code
• Ge Oven F1 error code
• Ge Oven F2 error code
• Ge Oven F20 error code
• Ge Oven F3 error code
• Ge Oven F350 error code
• Ge Oven F4 error code
• Ge Oven F5 error code
• Ge Oven F6 error code
• Ge Oven F7 error code
• Ge Oven F7X error code
• Ge Oven F8 error code

When to Call a Pro

Call a pro if you’re uncomfortable working inside a 240-volt appliance, if the fault returns after replacing the sensor, or if you need to trace intermittent wiring problems under power. Technicians have the tools to monitor relay behavior on the control board and to isolate shorts in the sensor circuit without risk of shock or further damage. If your oven has a cooling fan circuit that requires disassembly of blower housings or sheet-metal ductwork, professional service will save time and prevent accidental damage to hidden components. For gas line, burner, or igniter work, or if you ever smell gas, stop and call a licensed technician.