Oven Temperature Not Accurate
Your oven runs hotter or cooler than the temperature setting indicates.
Common Symptoms
- 1Food burns at normal cooking times
- 2Food undercooked at normal cooking times
- 3Baking results inconsistent
- 4Temperature seems to fluctuate
- 5Preheating takes abnormally long
Possible Causes
Oven needs calibration
Most CommonNormal use gradually shifts temperature accuracy. Most ovens can be recalibrated.
Faulty temperature sensor
PossibleThe sensor measuring oven temperature is giving inaccurate readings.
Door seal issues
PossibleHeat escaping through worn door gaskets affects temperature maintenance.
Control board malfunction
Less CommonElectronic controls not processing temperature information correctly.
DIY Troubleshooting Steps
Before starting: Always ensure your safety first. Unplug the appliance when working near electrical components. For gas appliances, turn off the gas supply if you smell gas.
- 1
Test with oven thermometer
Place a reliable oven thermometer in the center of the oven. Set oven to 350 degrees F and compare after 30 minutes of preheating.
- 2
Check door seal
Inspect the gasket around the oven door for gaps, tears, or hardening. Close the door on a piece of paper; it should hold firmly.
- 3
Calibrate the oven
Many ovens allow user calibration. Consult your owner's manual for the specific procedure for your model.
- 4
Test at multiple temperatures
Check accuracy at 250, 350, and 450 degrees F. Consistent offset suggests calibration issue; varying offset suggests sensor problems.
When to Call a Professional
Contact a professional technician if any of the following apply:
- !Calibration does not resolve the issue
- !Temperature sensor needs replacement
- !Temperature varies wildly during cooking
- !Error codes appear
- !Door seal needs replacement
Prevention Tips
- Verify calibration annually with oven thermometer
- Keep door gasket clean and inspect periodically
- Avoid slamming oven door
- Have professional verify accuracy during maintenance visits