E3 error appears during heating, often when using high-temperature modes like frying or sauté.

Safety first: Unplug the cooker and let it cool before touching internal parts.

• Check inner pot seating: Ensure the original Bosch inner pot is fully seated on the heating plate with no debris underneath. Do not operate without the pot.
• Inspect for burnt food: Remove the pot and check the bottom for a thick burnt layer. Soak and clean the pot thoroughly. Wipe the heating plate gently with a soft, slightly damp cloth (never use abrasive tools).
• Use adequate liquid: For pressure and rice programs, ensure you meet the minimum liquid requirement specified in the Bosch manual. Running dry can trigger E3.
• Reset and test: After cleaning and cooling, plug in and run a low-heat program to confirm normal operation.
• Advanced check: If E3 appears immediately even with a clean, correctly seated pot and proper liquid, the overheat sensor or thermal fuse may be faulty and should be checked and replaced by a technician.