Oven displays E2 and may shut off heating or refuse to start a cycle.

Safety first: Turn off power at the breaker and allow the oven to cool completely before inspection.

Step-by-step checks:

• Check ventilation: Ensure that the oven's rear and top vents are not blocked by cabinetry, foil, or other obstructions.
• Inspect sensor: Check the sensor for physical damage or dislodgement from its mounting point.
• Measure sensor resistance: After cooling, measure the sensor resistance at room temperature and compare to spec. Replace if out of range.
• Check relays: If the oven continues to heat when it should be off, the bake or broil relay on the control board may be stuck closed, requiring board replacement.

When to replace parts: Replace the oven temperature sensor if readings are incorrect. If overheating is due to a stuck relay, replace the electronic oven control board.