OBD-II code · Body
B0020 Left Side Deployment Control
Left Side Deployment Control: the restraints module has detected a fault in this airbag/pretensioner deployment circuit, which may prevent correct deployment in a crash. Safety-critical.
Is it safe to drive with B0020?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelySeat harness connector under driver seat damaged
- PossibleSide airbag squib circuit open
- Less likelySRS control module fault
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
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Left Side Airbag Module, Srs Control Module, Srs Wiring, Seat Harness Connector
Related codes
- B0018Right Front/Passenger Frontal Deployment Loop Resistance High
- B0019Right Front/Passenger Frontal Deployment Loop Resistance Low
- B001ACenter Frontal Stage 3 Deployment Control
- B0021Left Side Deployment Stage 1 Control
- B0022Left Side Deployment Stage 1 Loop Open
- B0023Left Side Deployment Stage 1 Loop Short to Ground
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.