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Sensor signal (xxx)

Sensor signal (xxx) - Fault in motor temperature or position detection

Stihl · Power Tools

What does Sensor signal (xxx) mean?

This error indicates a problem with signals from sensors within the tool, specifically related to motor temperature or motor position detection.

Common Causes

  • Fault in motor temperature measurement
  • Fault in the detection of motor position
  • Damaged sensor lead

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the sensor leads for any signs of damage, disconnection, or corrosion.

  2. 2

    Ensure the sensors themselves are clean and unobstructed.

  3. 3

    Test the sensor leads according to the relevant flow chart in the technical information.

  4. 4

    If sensor readings are incorrect, the motor or the electronic module may be at fault.

Browse all codes in this manual (35)
Verified technical data. Last updated: April 2026

Related Faults

1 glowing red LED1 glowing red LED - Battery too hot or too cold1 glowing red light1 glowing red light — Battery too hot or too cold3 flashing red LED (AK Series)3 flashing red LED - Internal electronic issue (AK Series)
Source: Stihl Power Tools
Open Manual (Page 147)Search more codes in this manual