✅ Cleaning Sponge I Use (Amazon paid link): br br Disclosure: Some links above are affiliate links which means I may earn a small commission if you click and buy, at no extra cost to you.br br Breville Support: br Breville Smart Oven (BOV900BSSUSC) showing an E03 error code? This guide explains what it means, how to safely reset after overheating, restore airflow, remove foil traps, clean vents and the crumb tray, and run a light test plus when it’s time to contact Breville support.