E012
Mammotion
Ultrasonic Obstacle Sensor Failure
Display shows E012; mower reports ultrasonic sensor error or obstacle detection fault
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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
Ultrasonic sensor face covered with dirt or water, Sensor physically damaged by impact, Loose ultrasonic sensor connector, Failed ultrasonic sensor module
How to Fix / Troubleshooting
Safety: Turn OFF the mower before cleaning or handling sensors.
- Clean sensor faces: Locate the ultrasonic sensors on the front or sides of the mower. Wipe them gently with a soft, dry cloth to remove mud, grass, or water droplets.
- Check for cracks: Inspect the sensor housings for cracks or deformation from impacts.
- Connector check: Open the top cover and locate the ultrasonic sensor harness. Reseat the connector on the mainboard.
- Drying: If the mower was recently washed or used in heavy rain, allow it to dry indoors for several hours before retesting.
- If E012 persists after cleaning and drying, replace the faulty ultrasonic sensor module.
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Repair Difficulty
Medium
3/5
Required Part
Ultrasonic Sensor Module
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