The mower has detected a combination of internal modules or accessories it doesn't recognise as valid — often after a part swap or firmware change.
Common causes
A replacement board or accessory that doesn't match the mower's configuration.
An interrupted firmware update leaving mismatched software.
How to fix it
Restart the mower and let it complete any pending firmware update.
If a part was recently replaced, confirm it's the correct one for your model.
Persistent configuration errors need a dealer to re-pair the modules.
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MowerWatch is an independent product, not affiliated with, endorsed by, or sponsored by Husqvarna AB. Automower® is a registered trademark of Husqvarna AB, used only to describe compatibility. Codes and guidance are provided in good faith — always follow your model's operator manual and consult a dealer for repairs. · All error codes · Guides