How to fix: Collision sensor problem
If your Husqvarna Automower 430X NERA is showing Collision sensor problem, the likely area to investigate is: Obstacle, debris between body/chassis, body alignment or high grass.
Quick answer
If your Husqvarna Automower 430X NERA is showing Collision sensor problem , the likely area to investigate is: Obstacle, debris between body/chassis, body alignment or high grass.
What matters on the Automower 430X NERA
This NERA model may be installed with a physical boundary wire or, where supported/configured, a wire-free EPOS setup. The correct diagnostic branch depends on the installation actually in use.
Use the exact error text shown by the mower or app. Similar wording across mower generations does not always mean the same component has failed.
Start with these checks
- Free mower from obstacle.
- Clean between body and chassis.
- Check body movement/alignment.
- Check whether high grass is causing repeated contact.
- Retest.
- Remove the mower from any obstacle.
Stop if: the mower has damaged wiring, a swollen/damaged battery, severe vibration, water inside electrical areas, or would require opening sealed electronics.
What this fault can mean
Collision sensor problem. Similar symptoms can have more than one cause, so work through the checks in order rather than replacing parts immediately.
Diagnostic decision
- Obstacle/debris → clean/retest
- Repeats on clear ground → sensor/service diagnosis
Need a model-specific diagnosis?
Answer a few questions in MowerFix AI to narrow down the likely fault before ordering parts.
Diagnose my Automower 430X NERASafety: switch off and safely isolate the mower before inspection. Do not open sealed electrical assemblies unless qualified. MowerFix AI provides troubleshooting guidance, not a guaranteed diagnosis.
Before buying parts
Do not replace a collision sensor until obstruction, debris, high grass and body alignment have been ruled out.
Automower 430X NERA Collision / body-sensor issue FAQ
Can I keep mowing with this collision sensor problem fault?
If the mower is repeatedly stopping, vibrating, failing to charge/dock or reporting a safety-related warning, stop and diagnose the cause first. Continuing can turn a minor obstruction or installation problem into a larger repair.
Should I replace a part immediately on my Automower 430X NERA?
Do not replace a collision sensor until obstruction, debris, high grass and body alignment have been ruled out.
What information should I record before contacting a dealer?
Record the exact error/message, charging-station light or app status, when the fault occurs, whether it is location-specific, and any recent changes to the garden, station, map, boundary wire or mower firmware.
When should the Automower 430X NERA go to a professional repairer?
Use a dealer or qualified repairer when the fault persists after safe external checks, when sealed electronics or battery packs would need opening, when wiring/electrical testing is required, or when the manufacturer procedure calls for service.
How this guide is prepared
Prepared by MowerFix AI. We separate manufacturer-supported troubleshooting from owner observations and avoid presenting an unverified part as a confirmed repair. Last reviewed: .
Still not sure what has failed?
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