E020
Bosch
PIN Code / Security Lock Error
Display shows E020 and mower cannot be started with PIN
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Incorrect PIN entered too many times, Keypad malfunction, Corrupted security data on main board
How to Fix / Troubleshooting
Safety: No special physical risk, but avoid disassembling security-related components.
- Wait lockout period: If too many incorrect PIN attempts were made, wait the specified time (see manual) before trying again.
- Verify PIN: Double-check the PIN from your Bosch documentation or app.
- Use app or owner verification: Some models allow PIN reset via the Bosch app or through customer support after proof of ownership.
- If keypad is unresponsive: See keypad-related error procedures; the keypad assembly may be faulty.
- Persistent E020: May indicate corrupted security data on the main control board, requiring authorized service replacement.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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