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B1100
System
Supplemental Restraint (Airbag)
Benötigter Scanner
Full-system scanner (engine, ABS, SRS, transmission, service resets)

System Voltage Low — Airbag Module

Understand B1100, common causes, and the right TOPDON scanner to diagnose it.

SRS module detected low supply voltage — may disable airbags until voltage normal.

Häufige Symptome

  • Airbag light after start
  • Multiple U-codes

Typische Ursachen

  • Weak 12V battery
  • Corroded terminals
  • Low voltage during crank

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 B1100 mean?
B1100 indicates system voltage low — airbag module. SRS module detected low supply voltage — may disable airbags until voltage normal.
Can I diagnose B1100 with a basic code reader?
B1100 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 B1100?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with B1100?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.