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B0103 Body

Front Crash Sensor Left Communication Lost

Communication with the left front crash sensor has been lost; SRS deployment logic for frontal impacts is degraded.

Affected components

  • Left front crash sensor
  • Srs bus

Common causes

  • High likelihood: Open bus wiring
  • Low likelihood: Gateway module routing CAN messages incorrectly
  • Low likelihood: CAN terminating resistor (120 Ω) drifted out of spec

Possible symptoms

  • Warning light or symbol related to the affected system
  • Comfort or safety function impaired

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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