Safety first: Unplug the air fryer and let it cool fully. Internal metal surfaces can remain hot for some time.

Visual inspection: Remove the rear/bottom cover to access the cabinet temperature sensor (NTC). Look for melted insulation, bare wires touching each other, or grease buildup around the sensor connector.
Clean and dry: If there is heavy grease or moisture, carefully clean the area with a dry cloth or cotton swabs. Do not use excessive liquid cleaners inside the unit.
Check resistance: Disconnect the sensor from the control board and measure resistance with a multimeter. A shorted sensor will read near 0Ω. Replace the sensor if it reads near zero or is physically damaged.
Inspect harness: Follow the harness from the sensor to the control board. Repair or replace any section where the insulation is cut or melted and the conductors may touch.
Control board check: If a known-good sensor still triggers E2, the main control board sensor input may be shorted internally and the board will need replacement.

Do not bypass or jumper the sensor; this is a safety device that prevents overheating.

Air fryer stops heating and displays E2 shortly after starting a cook cycle.

Possible Causes