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B1620
Sistema
Supplemental Restraint (Airbag)
Scanner richiesto
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Passenger Airbag Deactivation Switch Circuit

Understand B1620, common causes, and the right TOPDON scanner to diagnose it.

Passenger airbag cut-off switch circuit fault.

Sintomi comuni

  • Passenger airbag off light incorrect
  • SRS lamp

Cause tipiche

  • Failed cut-off switch in dash
  • Key switch style disable fault
  • Wiring in console

Di quale scanner hai bisogno?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Usa dati live e freeze frame prima di sostituire componenti. I codici ABS, SRS e U richiedono di solito uno scanner full-system.

Consigli diagnostici

  • Registra il freeze frame quando compare il codice
  • Cancella il codice solo dopo aver risolto la causa
  • Controlla codici pending correlati
  • Verifica che la batteria sia sopra 12,4 V prima di sospettare i sensori

Scanner TOPDON consigliati

Domande frequenti

What does B1620 mean?
B1620 indicates passenger airbag deactivation switch circuit. Passenger airbag cut-off switch circuit fault.
Can I diagnose B1620 with a basic code reader?
B1620 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for B1620?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with B1620?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.