Sök
B1100
System
Supplemental Restraint (Airbag)
Scanner som krävs
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.

Vanliga symptom

  • Airbag light after start
  • Multiple U-codes

Typiska orsaker

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

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 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.