Sök
B0102
System
Supplemental Restraint (Airbag)
Scanner som krävs
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.

Vanliga symptom

  • Airbag light on
  • Sensor may need replacement after crash

Typiska orsaker

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

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 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.