E16
Stihl
PIN Code / Theft Protection Error
Display shows E16 and the mower refuses to start; often related to security features.
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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 multiple times, PIN memory corruption, Unauthorized control panel replacement, Internal security module fault
How to Fix / Troubleshooting
Safety first: Ensure the mower is in a secure location.
- Wait lockout period: If the wrong PIN has been entered repeatedly, wait for the lockout period specified in the manual before trying again.
- Enter correct PIN: Carefully re-enter the correct PIN code. Check that no buttons are sticking or mis-pressed.
- Consult documentation: If you have forgotten the PIN, consult your purchase documents or contact your Stihl dealer with proof of ownership for a reset procedure.
Security-related faults often require dealer intervention with Stihl diagnostic equipment to reset or replace the security module or main PCB.
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Repair Difficulty
Hard
4/5
Required Part
Security Module / Main Control PCB
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