Error 16
Roborock Internal Tilt Sensor or IMU Error

Roborock robot vacuum announces “Error 16” / “Place the robot on a flat surface” even when on level flooring.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Robot stored or started at an angle, Tilt sensor calibration error, IMU (inertial measurement unit) fault, Debris under one wheel causing tilt

How to Fix / Troubleshooting

Safety first: Turn off the robot and place it on a known flat, hard surface.

Step-by-step:

  • Check for physical tilt: Ensure no objects are under the robot or wheels. Press each wheel to confirm equal suspension.
  • Power cycle: With the robot on the flat surface, power it off and back on without moving it. Wait for startup to complete.
  • Start cleaning: Begin a cleaning cycle and observe whether the error reappears.

If the robot repeatedly reports this error on flat floors: The internal tilt/IMU sensor may be defective and the main board or sensor module may need replacement.

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Repair Difficulty

Medium 3/5

Required Part

IMU / Tilt Sensor Module
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