Oven shows E2 and does not heat correctly, may overheat or shut off unexpectedly.

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

• Check for blocked airflow: Ensure ventilation openings around the Princess oven are not blocked by cabinetry or items. Overheating can trigger E2.
• Inspect sensor mounting: Verify the temperature sensor probe is firmly attached and not touching the heating elements or cavity walls directly, which can cause false high readings.
• Examine wiring: Access the rear of the oven and inspect the sensor wiring harness for melted insulation or contact with hot metal. Reroute or secure the harness away from hot spots.
• Test sensor resistance: Use a multimeter to check the NTC sensor at room temperature and compare to specifications. Replace if readings are unstable or out of range.

If the sensor and wiring are good but E2 continues, the main control board may be misreading the sensor and should be replaced. Because this involves high-voltage circuits, consider using a qualified technician.