Error 042
Husqvarna Robotic Lawn Mower
Severity: CriticalWhat Does This Error Mean?
Error 042 means the Automower cannot detect the boundary wire signal. Check the charging station LED and walk the wire perimeter to find a break.
How to Fix It
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Check the charging station LED
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Check the power supply
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Walk the boundary wire
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Check connectors and junction boxes
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Repair the break
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Test with a multimeter
Frequently Asked Questions
What causes Error 042 on Husqvarna Automower?
Error 042 is caused by an interrupted boundary wire loop. Common causes include wire cut by garden tools, animal damage, frost heave, or a corroded connector joint.
The charging station LED is green but I still get Error 042 — why?
The station LED confirms station power, not wire continuity. The loop may have a break even if the station is working. Inspect the full wire perimeter.
Can I bypass the boundary wire temporarily?
No — the Automower requires a closed loop signal to operate safely. You must repair the wire before the mower will resume normal operation.