Oven displays E16 and the cavity temperature reading is clearly wrong (e.g., shows 300°C when cold).

Safety first: Disconnect power and allow the oven to cool.

Sensor and wiring checks:

• Remove the temperature sensor from the cavity and inspect the wiring for cuts or crushed insulation.
• Measure resistance at room temperature; a very low resistance (near 0 Ω) indicates a shorted sensor.
• Check for continuity between each sensor lead and the oven chassis; any reading indicates a short to ground.
• Replace the sensor if shorted or contaminated with moisture.
• If the sensor and wiring are good but readings are still incorrect, the main control board's sensor input circuit may be defective and require board replacement.