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F04

F04 - Switch not detected / electronics do not function

Stihl · Power Tools

¿Qué significa F04 ?

This error message indicates that a switch within the tool is not being detected by the electronics, or the electronics are not functioning properly. This could be a wiring issue or a faulty switch.

Causas comunes

  • Loose or damaged wiring harness connection to the switch
  • Faulty trigger switch or other control switch
  • Damage to the electronic module

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Inspect the wiring harness connection to the switch for any damage or looseness.

  2. 2

    Verify that the switch itself is functioning correctly by listening for an audible click when pressed.

  3. 3

    If the switch or wiring appears intact, the electronic module may require testing or replacement.

  4. 4

    Refer to the flow chart for switch testing in the technical information.

Ver todos los códigos en este manual (35)
Datos técnicos verificados. Última actualización: April 2026

Fallas relacionadas

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)
Fuente: Stihl Power Tools
Open Manual (Page 148)Buscar más códigos en este manual