Vacuum shows E2 and shuts down, especially when using higher power modes; suction drops suddenly.

Safety: Power off the vacuum and remove the battery before inspection.

• Check for blockages: Detach the wand and floor head. Look through the wand against a light source; clear any clogs with a flexible rod (do not use sharp metal objects).
• Inspect the floor head inlet: Remove any debris lodged at the neck or internal channels.
• Clean the dustbin and cyclone: Empty the dustbin. Remove the cyclone module (if detachable) and tap it gently over a trash can to dislodge fine dust. Do not wash unless the manual explicitly allows it.
• Clean filters: Remove the pre-motor filter and HEPA filter. Tap gently to remove dust. If washable per Dreame manual, rinse with cold water only and allow to dry completely (24 hours) before reinstalling.
• Cool-down period: Allow the vacuum to rest for at least 30 minutes to cool the motor before retesting.

If E2 reappears with clear airflow and clean filters: The main motor or control PCB may be failing and should be inspected or replaced by a service technician.