Robot mower displays E06 and stops; often occurs when climbing or on uneven ground.

Safety: If the mower has tipped, set it upright on level ground and switch it OFF before inspection.

• Move to level area: Relocate the mower to a flat, firm surface and restart. If E06 clears, the previous area may be too steep or uneven; adjust the working area or boundary wire to avoid that zone.
• Inspect wheels and chassis: Check that front caster wheels and rear drive wheels rotate freely and are not jammed with mud, roots, or stones that could cause sudden tilting.
• Clean underbody: With the main switch OFF, carefully tilt the mower on its side and remove built‑up grass clippings from the underside and around the wheel arms.
• Recalibrate tilt (if menu option exists): Some Yarbo models allow sensor calibration in the settings menu. Place the mower on a perfectly level surface and run the tilt/IMU calibration procedure.

If E06 appears even on level ground after cleaning and calibration, the internal IMU/tilt sensor board may be defective and require replacement.