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Boundary wire sawtooth pattern

Boundary wire sawtooth pattern — Mower struggles to follow boundary wire

husqvarna · Automower Technical Manual

What does Boundary wire sawtooth pattern mean?

The Automower is unable to find the correct loop signal strength for the set corridor width, causing it to move in a saw tooth pattern along the boundary wire while searching for strength.

Common Causes

  • Automower does not find the strength on the loop signal that the set corridor width corresponds to.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Increase the corridor width successively until the saw tooth pattern behavior stops.

  2. 2

    Check the boundary wire for any damage or interference.

  3. 3

    Ensure the charging station and boundary wire connections are secure.

Browse all codes in this manual (37)
Verified technical data. Last updated: April 2026

Related Faults

Automower runs at an angle or in an arcAutomower runs at an angle or in an arc — Tilt sensor calibration or defectBlade motor defectBlade motor defect or Blade disc blocked — Blades cannot rotate freelyBoth the mowing and charging times are shorter than usualBoth the mowing and charging times are shorter than usual — High temperatures or low battery capacity
Source: Husqvarna Automower Technical Manual
Open Manual (Page 111)Search more codes in this manual