Stihl · Power Tools
This error indicates a problem with signals from sensors within the tool, specifically related to motor temperature or motor position detection.
Click steps to track your progress.
Check the sensor leads for any signs of damage, disconnection, or corrosion.
Ensure the sensors themselves are clean and unobstructed.
Test the sensor leads according to the relevant flow chart in the technical information.
If sensor readings are incorrect, the motor or the electronic module may be at fault.