A drive wheel is drawing too much current, is blocked, or has lost traction. Usually it's something physically fouling the wheel, not the motor itself.
Common causes
String, long grass, wire or a plastic bag wound around a wheel or axle.
A steep, wet or slippery slope where the wheel spins.
Caked mud or a stone jammed against a wheel.
Worn wheel-motor bearings or gears on an older machine.
How to fix it
Turn the mower off, tip it up and clear anything wound around the wheels and axles.
Check the wheels spin freely and the tread isn't clogged with mud.
If it happens on one slope, keep the mower off ground steeper than its rated limit, especially when wet.
Persistent blockage warnings with clean wheels point to a wheel motor or gearbox needing service.
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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