Robot vacuum reports E16 and stops shortly after starting; may be described as an obstacle sensor or wall sensor error.

Safety first: Turn off the robot.

• Locate side sensors: On many Neabot models, side obstacle sensors are small dark windows on the front corners or sides of the robot.
• Clean sensor windows: Wipe each window with a soft, dry microfiber cloth to remove dust and smudges.
• Test in different lighting: Move the robot to an area without direct sunlight or strong IR sources and restart cleaning.
• Inspect for cracks: If a sensor window is cracked or opaque, the housing or sensor board may need replacement.
• Service: Persistent E16 after cleaning suggests a failed sensor board or mainboard, which should be replaced by a technician.

Warning: Avoid using chemical cleaners on sensor windows; they can cloud the plastic and permanently reduce sensor performance.