Robot vacuum displays E16; app may say 'Wheel off the ground' or 'Stuck on obstacle'.

Safety first: Turn OFF the robot before moving it.

• Relocate robot: Move the robot to a flat, open area away from thresholds, cables, and rugs with high edges.
• Check wheels and suspension: Ensure both drive wheels and the front caster are touching the floor and move freely.
• Clean cliff sensors: Wipe the underside cliff sensors with a soft cloth to prevent false readings.
• Restart cleaning: Turn the robot ON and start a cleaning cycle. Observe whether it still reports E16.
• Persistent E16: If the robot frequently reports being lifted when it is not, the tilt sensor or related circuitry may be faulty and require service.