Oven temperature is inconsistent; sometimes too hot, sometimes too cold, with no clear pattern.

Safety first: Disconnect power before checking wiring.

• Wiggle test: With power off, inspect and reseat the oven sensor connector at both the sensor and control board. Ensure a tight fit.
• Sensor test: Measure sensor resistance at room temperature and at a known elevated temperature (e.g., 350°F using a controlled test). Replace if readings are erratic.
• Control board: If temperature swings persist with a good sensor and wiring, the control board relays or temperature circuit may be failing and require replacement.
• Power supply: Have an electrician verify stable voltage to the range.