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B0102
System
Supplemental Restraint (Airbag)
Benötigter Scanner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Impact Sensor Circuit Malfunction

Understand B0102, common causes, and the right TOPDON scanner to diagnose it.

Front or side impact sensor circuit fault — second impact sensor ID on some networks.

Häufige Symptome

  • Airbag light on
  • Sensor may need replacement after crash

Typische Ursachen

  • Failed impact sensor
  • Wiring after front-end repair
  • Sensor mounting loose

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 B0102 mean?
B0102 indicates impact sensor circuit malfunction. Front or side impact sensor circuit fault — second impact sensor ID on some networks.
Can I diagnose B0102 with a basic code reader?
B0102 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 B0102?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with B0102?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.