Oven heats, but temperature is inaccurate (too hot or too cold compared to set temperature).

Safety first: Turn off power at the breaker before testing the sensor.

• Verify with thermometer: Place an oven-safe thermometer in the center of the oven and run a 350°F bake cycle. Compare actual temperature to the set temperature after 20–30 minutes.
• Adjust calibration: Many Insignia ranges allow temperature calibration in the settings menu (e.g., +/- 35°F). Refer to the user manual and adjust to compensate for the observed difference.
• Check sensor: If the error is large or unstable, test the oven temperature sensor resistance at room temperature (about 1080–1100 Ω). Replace if out of spec.
• Improve airflow: Avoid covering racks with foil and do not place large pans directly against the back wall, which can affect sensor readings.