Dishwasher displays E12; often associated with poor heating or drying and may occur intermittently.

Safety first: Turn off power and allow the dishwasher to cool before accessing the base or sump.

• Locate NTC sensor: The NTC is usually clipped into the sump or heater housing. Refer to your Midea model diagram if needed.
• Check connection: Ensure the NTC plug is fully seated and free of corrosion or moisture. Dry and clean if necessary.
• Resistance test (advanced): With power off, disconnect the NTC and measure its resistance at room temperature. Compare to the service manual; an open circuit or near-zero resistance indicates failure.
• Replace sensor: If faulty, install a new Midea NTC temperature sensor, ensuring the O-ring or seal is properly seated to prevent leaks.
• Control board: If a new NTC does not resolve E12, the main PCB may be defective and require professional diagnosis.