Oven temperature sensor reports cavity temperature to regulate heat. Related symptoms include sensor codes, large temperature error or early stop. Those symptoms do not prove the component failed: compare after full preheat and verify exact model/code. Compare an oven thermometer after a full preheat, not just at the signal.
What this covers
- electronic ranges and ovens
What it does not cover
Differential
Likely causes of “Oven temperature sensor”, and how to tell them apart
- 1
The oven has not finished preheating
What separates it The temperature reading looks low right after the preheat signal and improves over ten to fifteen minutes.
How to confirm Compare an oven thermometer after a full preheat, not just at the signal.
- 2
The oven's calibration offset has been changed
What separates it Every bake is hotter or cooler by the same amount, and the offset is set in the menu.
How to confirm Check the temperature adjustment in the oven's settings.
- 3
Rack position or cookware distorts the result
What separates it Results vary between racks and pans while the sensor reads correctly.
How to confirm Test on one center rack with a light-colored pan.
- 4
The sensor is out of range or has failed
What separates it A sensor error code appears or the temperature is far off and unstable, even after a full preheat.
How to confirm Note the exact code and use the model's manual; the sensor is a service item.
Before you touch a setting
Record this first — changing settings destroys the evidence
- The exact code, the temperature set and the reading from an oven thermometer at several times.
- The mode used and the rack position.
- The offset setting and whether the oven has been calibrated.
Try in this order
0 of 2 completedTest before you replace
ReversibleCompare after full preheat and verify exact model/code.
Weigh the repair
ReversibleReplacement difficulty for the oven temperature sensor is moderate to high with live-voltage and hot-surface risks.
Stop boundary
When this stops being a self-service repair
- !Replacing the sensor means disconnecting power and reaching inside the cavity wall; it is moderate to high difficulty for most owners.
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Should I adjust the oven's temperature offset?+
Only after measuring with a reliable thermometer over several cycles. Use the range the manual allows.
How does the oven know its temperature?+
A probe in the cavity changes its electrical resistance with heat, and the control reads that resistance. A drifting probe gives a reading that no longer matches the true temperature.
What does the temperature sensor do?+
It tells the control how hot the oven is. A wrong sensor reading causes bad temperature control.
How can it be tested?+
With the oven cool and unplugged, a technician measures its resistance against the specification for the model.
Could it cause uneven baking?+
Yes, a drifting sensor makes the oven run hotter or cooler than displayed.