B0046
Left Curtain Deployment Loop Open
An open circuit has been detected in the deployment loop of the left curtain (head) airbag. Curtain protection on the driver side will not deploy.
An open circuit has been detected in the deployment loop of the left curtain (head) airbag. Curtain protection on the driver side will not deploy.
Common causes
- high
Broken wire in headliner
One of the most commonly reported causes for this code — check this first.
Typical part cost: $220-1650
- medium
Curtain airbag connector unseated
A plausible cause — test and verify before replacing parts.
Typical part cost: $220-1650
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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 B0046 mean?
B0046 means "Left Curtain Deployment Loop Open". It is a generic OBD-II code that points to a fault in the body.
What are the most common causes of B0046?
broken wire in headliner; curtain airbag connector unseated — 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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