garajizOBD-II code · generic
B3A21
Active Aerodynamic Feature Control Module B
- System
- B — Body electronics
- Severity
- Minor (2/5)
- Can I keep driving?
- Usually safe to drive
What does B3A21 mean?
B3A21 is defined as “Active Aerodynamic Feature Control Module B”.
You can usually keep driving, but have it checked soon so a small fault doesn’t become a bigger one.
Manufacturer-specific meanings
The same code can mean something different on some makes.
- BMW, Mini: Active Aerodynamic Feature Control Module B
Related codes
- B3A20Active Aerodynamic Feature Control Module A
- B3A22Active Aerodynamic Feature Control Module C
- B3A1FBattery Charger B Ground Performance
- B3A23Active Aerodynamic Feature Control Module D
- B3A1EBattery Charger A Ground Performance
- B3A24Active Aerodynamic Feature Control Module A Power Mode Circuit High Voltage
Look up another code
This page is general information; an exact diagnosis needs measurements and a technician’s check.