Sök
B1020
System
Supplemental Restraint (Airbag)
Scanner som krävs
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.

Vanliga symptom

  • SRS light on
  • Passenger airbag disabled indicator

Typiska orsaker

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

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 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.