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Diagnose/B0100
B0100Critical SeveritySafety

Electronic Frontal Sensor 1 Malfunction

What This Means

The front crash sensor used by the airbag system has malfunctioned. This sensor detects frontal impacts and triggers airbag deployment.

Common Symptoms

  • Airbag warning light on
  • Airbags may not deploy in a crash
  • No drivability issues
  • Safety system compromised

Common Causes

  • Failed crash sensor
  • Wiring damage from front-end work
  • Connector corrosion
  • Previous collision damage
  • Module communication error

Estimated Repair Cost

$200 – $800
Parts and labor (varies by vehicle and location)
Difficulty:Professional

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For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.