MowerFix AIAutomower 405X: No loop signal
If your Husqvarna Automower 405X is showing No loop signal, MowerFix AI records this as a model-specific diagnostic condition.
What it usually means
Station power, low-voltage cable, boundary wire, connector, loop antenna or interference condition
First checks
Check station power/LED, low-voltage cable and boundary connectors; isolate wire faults before replacing electronics.
Before replacing parts
Confirm the exact mower model, product/article number and the message shown on the mower or app. Check simple installation, obstruction, power and connection causes first. Do not open sealed electrical assemblies or battery packs unless the manufacturer procedure specifically permits it.
Potentially relevant parts already in MowerFix AI
- Compatible part — 529 28 08-01
- Compatible part — 577 86 48-01
- Compatible part — 967 97 21-01
Confirm compatibility against the mower product/article number before ordering.
Run the MowerFix diagnosis
The full diagnostic flow can narrow the fault using your exact mower, symptoms and answers, then show the most relevant repair path and available parts information.
Diagnose my Automower 405XTechnical reference: manufacturer/support source.
MowerFix AI is an independent diagnostic and parts-referral platform. Manufacturer names and trademarks belong to their respective owners. Error wording and applicability can vary by firmware, region and mower generation; confirm against the mower's current operator documentation.