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Reference

Automower fault & error message reference

Find what Husqvarna's own operator's manuals say each Automower fault and information message means and what to do, by model, for the 420/430X, 305/310/315 Mark II, 310/315/315X and 405X/415X wire models and the 520/550 EPOS (wire-free) models, with links to where owners have written about the same message.

Models
Automower 420 to 450X, 305 to 315 Mark II, 310/315/315X, 405X/415X (wire) and 520/550 EPOS; see the list for the manual behind each
Last updated
03 Nov 2026
Automower 420 to 450X, 305 to 315 Mark II, 310/315/315X, 405X/415X (wire) and 520/550 EPOS; see the list for the manual behind eachDetails
Models
Automower 420 to 450X, 305 to 315 Mark II, 310/315/315X, 405X/415X (wire) and 520/550 EPOS; see the list for the manual behind each
Last updated
03 Nov 2026
On this page
  1. Find your model
  2. Owner reports for the same messages
  3. What's covered and what isn't
  4. Nothing here matches your symptom?
  5. If your code isn't here
  6. Sources
Scope of this page: Husqvarna's own fault and information messages, by model. Each model page below has the manual's cause and action for every message in its table, put in plain words; the meaning is the manual's. Husqvarna's other Automower manuals have the same kind of table, and a message on another model can differ.

Husqvarna names its messages; it does not number them. Each shows a name such as "Trapped" or "No loop signal", then the cause and the action. The app may show the name in your own language; we give the manual's English.

Find your model

Husqvarna's manuals each carry their own table of fault and information messages. The page for your mower has that manual's rows, with the cause and action for each message.

Your mower The manual The page
Automower 420, 430X, 440, 450X (wire) Operator's manual, 2023, edition line 1201 - 0071 420, 430X, 440 and 450X messages
Automower 520, 550 EPOS (wire-free) Operator's manual, 2026, edition line 1576 - 0102 520 and 550 EPOS messages
Automower 310, 315, 315X (wire) Operator's manual, 2021, edition line 1440 - 0043 310, 315 and 315X messages
Automower 405X, 415X (wire) Operator's manual, 2023, edition line 1650 - 0064 405X and 415X messages
Automower 305, 310 Mark II, 315 Mark II (wire) Operator's manual, 2023, edition line 1462 - 0085 305, 310 Mark II and 315 Mark II messages
Automower 435X AWD (wire) Operator's manual, 2023, edition line 1404 - 0146 435X AWD messages
Automower 535 AWD (wire) Operator's manual, 2023, edition line 1427 - 0117 535 AWD messages
Automower 435 iQ AWD (wire and EPOS) Operator's manual, 2026, edition line 2756 - 001, no date printed8 435 iQ AWD messages
Automower 535 AWD EPOS (wire and EPOS) Operator's manual, 2025, edition line 1427 - 0139 535 AWD EPOS messages
Automower 540, 560, 580, 580L EPOS (wire-free) Operator's manual, 2026, edition line 2550 - 005, no date printed10 540, 560, 580 and 580L EPOS messages
Automower 410iQ, 420iQ, 440iQ (wire and EPOS) Operator's manual, full edition, edition line 2455 - 007 - 16.06.202611 410iQ, 420iQ and 440iQ messages

Owner reports for the same messages

Some messages are covered in more depth by what owners wrote about them. The owner-report pages below hold the counts and the fixes; this page does not repeat them.

Message Where owners wrote about it
No loop signal (wire models) Automower 'no loop signal': what owners found on wire models
Charging station blocked, Stuck in charging station, Charging system problem Automower docks but won't charge, or won't enter the station, which covers the German-language 'charging station blocked' and 'charging system problem' messages
Lifted, Mower tilted, Upside down, Collision, Tilt sensor problem Automower stops with a lift, tilt or collision alarm on a flat lawn
Empty battery, Low battery, and a mower that mows for shorter periods Automower battery wearing out
Searching for satellites, No accurate position from satellites Automower EPOS stops on 'satellite search', and Husqvarna's own checks on Automower keeps stopping on an EPOS lawn
No correction data available Husqvarna's own checks on Automower keeps stopping on an EPOS lawn
Reference station communication problem, Multiple reference stations Automower EPOS: the mower cannot find the reference station
Connectivity problem, SIM card not found Automower 'Connect is not available', owner reports of a connectivity card not found
Any message after a firmware update NERA models after a firmware update and the 405X and 415X after a 54.x or 57.x update

Every message on the model pages is the manual's. Where an owner-report page exists, it says what owners found, which is a different question from what Husqvarna says to do. "Restart the product" is the first step the manuals give for many messages: Restart or factory reset an Automower says how.

What's covered and what isn't

Read row by row: the eleven manuals above.

Not read row by row, so not stated here: the manuals for the 430XH and 450XH. The same goes for the 520 and 550 wire and H versions and the 450X EPOS. Each has a troubleshooting chapter with a table of this kind. A message name that is not on a model page may still be in your manual.

What the tables do not tell you. They say what Husqvarna tells owners to do. They say nothing about how often a message appears or whether the action works. That is what the owner-report pages above are for.

Nothing here matches your symptom?

A fault that isn't listed here doesn't mean nothing is wrong with your mower. The manufacturer's own manual is linked from this page, and the guides for this brand are listed on its overview.

Found something we don't cover yet? Send us the details — that's how the next owner finds it documented.

If your code isn't here

  1. Find your mower in the list on this page and open the page for its manual. Each page has the manual's fault and information messages, and for most models the station lamp and the symptoms it lists.

    More about this step

    Applies when: the app or the mower shows a message.

    Worked if: you have Husqvarna's own cause and action for your message, not a forum guess at what it means.

    Didn't work? Next: step 2 — Open the owner-report page for your message. Find it from the...

    Method: the eleven Husqvarna operator's manuals listed on this page

  2. Open the owner-report page for your message. Find it from the table below, to see what other owners found and how many of them found it.

    More about this step

    Applies when: the manual's action did not fix it, or your message is in the table below.

    Worked if: you have what owners actually did about it, beside what the manual says.

    Didn't work? Next: step 3 — Speak to your Husqvarna representative or approved servicing...

    Method: the owner-report pages named in the table; what they hold is stated on each

  3. Speak to your Husqvarna representative or approved servicing dealer. Do this if the same message keeps coming back, as the manuals say.

    Stop and get help if

    the station lamp is solid red: the manuals say an authorised service technician must correct that, so leave the station alone.

    More about this step

    Applies when: the message comes back after you have followed the manual's action.

    Worked if: someone with the diagnostic tool reads the mower, or you know the dealer's terms.

    Method: the manuals' own wording on repeated messages and on the solid red lamp

Sources

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