Sök
B1620
System
Supplemental Restraint (Airbag)
Scanner som krävs
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.

Vanliga symptom

  • Passenger airbag off light incorrect
  • SRS lamp

Typiska orsaker

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

Vilken scanner behöver du?

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

Använd live-data och freeze frame innan du byter delar. ABS-, SRS- och U-koder kräver oftast en fullsystems-scanner.

Diagnostiktips

  • Spara freeze frame när koden först sätts
  • Rensa koden först efter att orsaken är åtgärdad
  • Kontrollera relaterade väntande koder
  • Verifiera batterispänning över 12,4 V innan du misstänker sensorer

Rekommenderade TOPDON-scannrar

Vanliga frågor

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.