Symptoms
- Mower stops and displays a numbered or named error
- App sends a notification about a fault
- Mower is stuck in place with lights flashing
- Error recurs in a specific area of the yard
Likely causes
- CommonLift or tilt sensor triggeredSteep terrain, holes, or being picked up can trigger a safety stop.
- CommonWheel or blade motor obstructionDebris or thick grass can overload a motor and trigger a fault.
- PossibleBoundary wire faultA break or short in the perimeter wire triggers a signal loss error.
- PossibleSoftware glitch requiring a restart or updateOccasionally a firmware hiccup causes an error that clears after a reset or update.
What to do
- Note the exact error code or message and look it up in the mower's manual or app, since codes are model-specific.
- Check the mower's wheels and blade area for jammed debris, sticks, or thick clumps of grass.
- Inspect the terrain where the error occurred for steep slopes, holes, or obstacles that could trigger a lift/tilt sensor.
- Restart the mower fully (power off and on) to clear a possible software glitch.
- Check for available firmware updates through the manufacturer's app.
- If the boundary wire is suspected, walk the perimeter looking for breaks or splices needing repair.
Tools and parts
- Smartphone with mower app
Boundary wire connector kitSearch: “robot mower boundary wire repair kit”
When to call a pro
If a specific error code points to a sensor or motor fault that persists after basic checks, the manufacturer's support or a certified installer can diagnose it further.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.