Display shows U01 or similar user error code; cooker beeps and cancels program.

Safety first: Ensure lid and valves are in safe positions before changing modes.

• Reset program: Cancel the current program and reselect according to the Bosch manual, ensuring valid time and temperature settings.
• Check lid and valve: For pressure modes, confirm the lid is locked and the valve is in the correct position.
• Restore defaults: If available, use the settings menu to restore factory defaults.
• Consult manual: Refer to the model-specific Bosch manual for the exact meaning of U01 and adjust usage accordingly.