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B1020
System
Supplemental Restraint (Airbag)
Benötigter Scanner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Passenger Airbag Loop Circuit Failure

Understand B1020, common causes, and the right TOPDON scanner to diagnose it.

Passenger airbag squib circuit open or high resistance.

Häufige Symptome

  • SRS light on
  • Passenger airbag disabled indicator

Typische Ursachen

  • Passenger bag connector
  • Occupancy sensor bypass for aftermarket seats
  • Module fault

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 B1020 mean?
B1020 indicates passenger airbag loop circuit failure. Passenger airbag squib circuit open or high resistance.
Can I diagnose B1020 with a basic code reader?
B1020 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 B1020?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with B1020?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.