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Motor lead / sensor signal (xxx)

Motor lead / sensor signal (xxx) - Motor speed or position fault

Stihl · Power Tools

What does Motor lead / sensor signal (xxx) mean?

This indicates a problem with the sensor signal from the motor, potentially affecting speed detection or position sensing. This could be due to a faulty sensor or lead.

Common Causes

  • Fault in the detection of motor position
  • Motor speed is too low
  • Damaged sensor lead

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the motor lead and sensor lead connections for security and damage.

  2. 2

    Inspect the sensor itself for any signs of physical damage or contamination.

  3. 3

    Test the sensor lead according to the flow chart in the technical information.

  4. 4

    If the issue persists, the motor or its associated electronics may be faulty.

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

Related Faults

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Source: Stihl Power Tools
Open Manual (Page 148)Search more codes in this manual