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B1620
Systeem
Supplemental Restraint (Airbag)
Scanner vereist
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.

Veelvoorkomende symptomen

  • Passenger airbag off light incorrect
  • SRS lamp

Typische oorzaken

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

Welke scanner heb je nodig?

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

Gebruik live data en freeze frame voordat je onderdelen vervangt. ABS-, SRS- en U-codes vereisen meestal een full-system scanner.

Diagnosetips

  • Leg freeze frame vast wanneer de code voor het eerst verschijnt
  • Wis de code pas na het oplossen van de oorzaak
  • Controleer op gerelateerde pending codes
  • Controleer of accuspanning boven 12,4 V is voordat je sensoren suspecteert

Aanbevolen TOPDON scanners

Veelgestelde vragen

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.