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.
Fault on left-side restraints sensor 4. Side impact sensors detect lateral acceleration to trigger side and curtain airbags.
Common causes
- high
Side impact sensor failed
One of the most commonly reported causes for this code — check this first.
Typical part cost: $170-1320
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does B009A mean?
B009A means "Left Side Restraints Sensor 4". It is a generic OBD-II code that points to a fault in the body.
What are the most common causes of B009A?
side impact sensor failed — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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