The smoker displays E05 and stops heating mid-cook; the temperature reading may be erratic or frozen.

Safety first: Unplug the smoker and allow it to cool before cleaning or disassembly.

• Clean the sensor: Using a degreaser safe for cooking appliances, thoroughly clean the temperature sensor probe to remove baked-on grease and soot. Wipe dry with a soft cloth.
• Check harness and connector: Access the rear of the sensor and ensure the harness is intact and firmly connected to the main control PCB. Look for any signs of heat damage or corrosion.
• Perform a basic sensor test (optional): With a multimeter set to resistance, measure the sensor at room temperature and compare the reading to the expected NTC value from service documentation (commonly around 100kΩ at 25°C, but verify for your specific model). Large deviations indicate a faulty sensor.
• Replace sensor if suspect: Install a new Ninja-compatible NTC sensor probe, routing the harness as originally installed.
• Control board consideration: If a new sensor does not resolve E05, the control board’s measurement circuit may be faulty, and the main control PCB will need replacement.