If food keeps coming out undercooked or burnt, the oven may not be holding the temperature it shows. A simple test tells you if the oven is off and by how much.
Call (539) 281-3311All troubleshooting guidesHow to test your oven
- Put an oven thermometer on the middle rack.
- Preheat to 350 degrees Fahrenheit and wait until the oven says it is ready, then wait another 15 to 20 minutes.
- Read the thermometer and note the difference from the set temperature.
- Repeat at another temperature. Some swing above and below the setting is normal as the oven cycles.
- A consistent difference of 25 degrees or more is worth correcting or repairing.
What you can try
- Check your oven manual for a temperature offset or calibration setting. Many ovens let you adjust it.
- Make sure the door seal is not torn and the door closes fully.
- Do not line the oven bottom or block the vents with foil, which can upset the heat.
- Check that the racks are in the right position for the cooking you are doing.
Common causes of an inaccurate oven
- A failing temperature sensor. This is a frequent cause of an oven reading wrong.
- A worn bake or broil element that heats weakly or unevenly.
- A weak igniter on a gas oven.
- A faulty control board or thermostat.
- A damaged door gasket that lets heat escape.
Frequently asked questions
Why is my oven hotter than the temperature I set?
A failing temperature sensor or a control fault is the usual cause. Test with an oven thermometer to see how far off it is.
Why is my oven cooler than the setting?
A weak element or igniter, a bad door seal or a failing sensor can all stop the oven reaching the set temperature.
Can I recalibrate my oven myself?
Many ovens have a temperature offset in the settings. Check your manual. A sensor or element fault needs repair.
Is it worth repairing an oven that is off temperature?
Sensor and element repairs are usually worth it. See our repair or replace guide.
Related guides
Oven still off temperature?
Call and tell us what the thermometer reads. We will tell you what to expect before anyone comes out.
Call (539) 281-3311Written by the ElectricAppliance team, 2351 W Vancouver St, Broken Arrow, OK. Last updated 2026-10-29. This page is general information, not a quote. Prices and timing depend on the appliance, the part and the fault, so call for a diagnosis.