Husqvarna Mower Error Code E05: How to Fix It

Medium 20-45 minutes High Severity Verified June 2026
Error Code
E05
Brand
Husqvarna
Product Type
mower
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
20-45 minutes
Husqvarna error code E05 (also shown as E5) indicates your robotic mower cannot detect its cutting blade or the blade has fallen off. This is a critical safety error that prevents the mower from operating to avoid damage to the cutting disc motor or injury from loose parts.
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Tools You'll Need

How to Fix Error Code E05

  1. Turn off mower and inspect blade area

    Always turn off the mower and wait for all moving parts to stop before handling. Wear work gloves to protect from sharp blade edges.
  2. Check blade attachment screws

    Use only the correct torque specification from your manual to avoid damaging the cutting disc threads.
  3. Inspect cutting blades for damage

    Dispose of damaged blades safely - they remain very sharp even when broken.
  4. Clean blade sensor area

  5. Check cutting disc motor

    Do not force the cutting disc if it feels stuck - this may indicate internal damage requiring professional repair.
  6. Reinstall blades and test

    Never operate the mower with missing, damaged, or improperly installed blades.
  7. Reset mower system if needed

Parts You May Need

Replacement cutting blades
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Blade attachment screws
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Cutting disc assembly
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Replacement cutting blades
Check Price on Amazon
Blade attachment screws
Check Price on Amazon
Cutting disc assembly
Check Price on Amazon
Replacement cutting blades
Check Price on Amazon
Blade attachment screws
Check Price on Amazon
Cutting disc assembly
Check Price on Amazon
Replacement cutting blades
Check Price on Amazon
Blade attachment screws
Check Price on Amazon
Cutting disc assembly
Check Price on Amazon
Replacement cutting blades
Check Price on Amazon
Blade attachment screws
Check Price on Amazon
Cutting disc assembly
Check Price on Amazon
Replacement cutting blades
Check Price on Amazon
Blade attachment screws
Check Price on Amazon
Cutting disc assembly
Check Price on Amazon
Replacement cutting blades
Check Price on Amazon
Blade attachment screws
Check Price on Amazon
Cutting disc assembly
Check Price on Amazon
Replacement cutting blades
Check Price on Amazon
Blade attachment screws
Check Price on Amazon
Cutting disc assembly
Check Price on Amazon
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When to Call a Professional

Contact a Husqvarna service center if the cutting disc motor is damaged, making grinding noises, or won't rotate freely. Also seek professional help if the blade detection sensor appears damaged or if the error persists after replacing blades and performing a system reset.

Frequently Asked Questions

Why does my Husqvarna mower show E05 error?
Error code E05 means the mower cannot detect its cutting blades, usually due to loose, missing, or damaged blades, loose attachment screws, or a dirty blade sensor.
Can I run my Husqvarna mower with E05 error?
No, never operate the mower with an E05 error. This is a critical safety feature that prevents damage to the motor and protects against injury from loose or missing blades.
How often should I replace Husqvarna mower blades?
Replace cutting blades every 2-3 months during mowing season or when they show signs of wear, damage, or dullness. Heavy use may require more frequent replacement.
What causes Husqvarna mower blades to fall off?
Blades typically fall off due to loose attachment screws, worn blade mounting holes, hitting solid objects like rocks or roots, or using incorrect replacement screws.
Where is the blade sensor on my Husqvarna mower?
The blade detection sensor is located near the cutting disc motor underneath the mower. It's a small electronic component that monitors blade presence and rotation.