Display shows E2 and the cooker will not start or stops heating; often appears when trying high-temperature or pressure programs.

Safety: Unplug the multicooker and ensure it is completely cool. Do not attempt to open the lid assembly while the unit is under pressure.

Step 1 – Check for obvious lid damage:

• Inspect the lid area where the sensor is usually located (near the steam outlet or inner lid plate).
• Remove the inner lid (if your Klarstein model has a removable inner lid plate) and clean any food residue or moisture around the sensor area.

Step 2 – Inspect lid sensor wiring:

• Open the top cover (on some models you must remove screws on the back or under decorative caps).
• Locate the lid NTC sensor – usually a small probe or disc attached to the inner lid or steam channel with two wires or a flat flex cable going to the main body.
• Check that the cable is not pinched, cut, or broken at the hinge.
• Unplug and re-seat the lid sensor connector on the main PCB.

Step 3 – Test the sensor (if you have a multimeter):

• Disconnect the lid sensor from the board.
• Measure resistance across the two leads; compare with the bottom sensor if they are the same type.
• Open or short readings indicate a failed sensor.

Step 4 – Repair:

• Replace the lid NTC temperature sensor or the entire lid harness if the cable is damaged.
• If the sensor and wiring are intact but E2 remains, the main control PCB may be defective and should be replaced by a technician.