Bosch oven clock and timer work, but heating stops randomly during cooking

Safety first: Turn off power before inspecting internal components.

• Reproduce fault: Note if the oven stops after a certain time or temperature, which may indicate overheating.
• Check cooling: Ensure the cooling fan runs and vents are clear to prevent control board overheating.
• Inspect wiring: Wiggle harnesses gently (with power off) to check for loose connections at the control board and thermal cut-out.
• Test TCO: Replace a thermal cut-out that shows signs of heat damage or intermittent open readings.
• Control board: If relays click off and do not re-engage, the main control board may be failing and require replacement.