Bosch range clock and display work, but none of the oven functions (bake, broil, convection) will start; no error code.

Safety first: Ensure the oven is empty before testing functions.

• Check child lock: Look for a lock icon on the display. Follow the user manual to disable the child lock (often by holding a specific key combination).
• Exit demo mode: Some Bosch ranges have a demo mode. Refer to the manual to exit this mode.
• Test door switch: Open and close the door; the oven light should respond. If not, the door switch may be faulty.
• Control board: If interlocks are good, the electronic oven control may not be energizing relays and may need replacement.