Error 19
Gardena Cutting Height Sensor / Calibration Fault

Display shows “Error 19 – Unexpected cutting height” or similar calibration error.

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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

Misaligned height sensor, Firmware glitch after mechanical shock, Dirty or corroded height sensor contacts, Incorrect reassembly after service

How to Fix / Troubleshooting

Safety first: Press STOP, switch OFF, and remove the key before adjusting height.

  • Cycle height range: Move the cutting height through its full range several times to clean contacts and recalibrate the sensor.
  • Clean mechanism: Remove grass and dirt from around the height adjustment area.
  • Power reset: Turn the mower OFF for a few minutes, then restart and set the height to a mid position.
  • Check assembly: If the mower was recently serviced, verify that the height adjustment parts are installed in the correct orientation per the Gardena manual.

Persistent sensor errors may require replacement of the height sensor or main PCB.

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Repair Difficulty

Medium 3/5

Required Part

Gardena Cutting Height Sensor
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