Bosch oven displays E810 and interior light or auxiliary functions fail

Safety first: Turn off power at the breaker before changing bulbs or touching wiring.

• Replace lamp: Remove the glass cover over the oven light (usually twists off). Replace the bulb with the correct Bosch-rated high-temperature oven lamp.
• Inspect lamp holder: Check for heat damage or corrosion on the lamp socket. Replace the holder if contacts are burnt.
• Check wiring: Access the rear of the lamp assembly and inspect wiring for burns or shorts to chassis.
• Control board: If a known-good lamp does not light and wiring is intact, the light relay or triac on the main control board may be faulty and the board will need replacement.