B009A
Left Side Restraints Sensor 4
Fault on left-side restraints sensor 4. Side impact sensors detect lateral acceleration to trigger side and curtain airbags.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Common causes
Ordered by how often each turns out to be the cause.
- Side impact sensor failedCommon
Parts involved
- Left Side Restraints Sensor 4
- Sensor Wiring
B009A is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.