E015
Bosch Ultrasonic / Obstacle Sensor Fault (on models with additional sensors)

Display shows E015 and mower stops near obstacles without touching them

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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

Dirty ultrasonic sensor faces, Water ingress into sensor, Loose sensor connector, Failed ultrasonic sensor module

How to Fix / Troubleshooting

Safety: Turn OFF the mower and remove from the lawn.

  • Clean sensor surfaces: Gently clean the front-facing ultrasonic or proximity sensors with a soft, slightly damp cloth. Do not use solvents.
  • Check for cracks: Inspect sensor housings for damage that could allow water ingress.
  • Dry the mower: If the mower was used in heavy rain, allow it to dry indoors for 24 hours before retrying.
  • Test operation: Restart the mower in an open area with few obstacles and see if E015 reappears.
  • If error persists: The ultrasonic sensor module or its wiring harness may need replacement.
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Repair Difficulty

Medium 3/5

Required Part

Ultrasonic Sensor Module
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