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B0021 Body

Left Side Deployment Stage 1 Control

The SRS module has detected a fault in the deployment control circuit for the left side (driver) airbag stage 1. Side impact protection on the driver side may be reduced.

Affected components

  • Driver side airbag
  • Srs control module
  • Srs seat wiring

Common causes

  • High likelihood: Loose airbag connector under driver seat
  • Medium likelihood: Wiring pinched in seat rail
  • Low likelihood: Side airbag module internal fault

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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