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B1620
System
Supplemental Restraint (Airbag)
Benötigter Scanner
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.

Häufige Symptome

  • Passenger airbag off light incorrect
  • SRS lamp

Typische Ursachen

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

Welchen Scanner brauchen Sie?

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

Nutzen Sie Live-Daten und Freeze Frame, bevor Sie Teile tauschen. ABS-, SRS- und U-Codes erfordern meist einen Vollsystem-Scanner.

Diagnose-Tipps

  • Freeze Frame erfassen, wenn der Code erstmals gesetzt wird
  • Code erst nach Behebung der Ursache löschen
  • Auf verwandte pending codes prüfen
  • Batteriespannung über 12,4 V prüfen, bevor Sie Sensoren verdächtigen

Empfohlene TOPDON Scanner

Häufig gestellte Fragen

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.