OBD-II code · Body
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.
Is it safe to drive with B0046?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyBroken wire in headliner
- PossibleCurtain airbag connector unseated
Symptoms
- Warning light or symbol related to the affected system
- Comfort or safety function impaired
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1.5–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Left Curtain Airbag, Srs Roof Wiring
Related codes
- B0041Third Row Left Frontal Stage 1 Deployment Control
- B0042Side Deployment Loop Open (Generic)
- B0043Third Row Left Frontal Stage 3 Deployment Control
- B0047Left Curtain Deployment Loop Short to Ground
- B0048Third Row Right Side Airbag Deployment Control
- B0049Third Row Right Frontal Stage 1 Deployment Control
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.