U02 or similar code appears when trying to start a program with the lid open.

Safety first: Never attempt to bypass lid safety interlocks.

• Close lid firmly: Ensure the lid is fully closed until you hear a click. Press down evenly on both sides of the lid.
• Check for obstructions: Inspect the lid gasket and pot rim for food debris or utensils preventing closure. Remove any obstruction.
• Hinge alignment: If the lid appears crooked, gently lift and close it several times. If misalignment persists, the hinge screws may need adjustment by a technician.
• Normal behavior: U02 is usually informational; once the lid is properly closed, the code should clear automatically.