B3A20
Active Aerodynamic Feature Control Module A
B3A20 is an OBD-II diagnostic trouble code meaning: Active Aerodynamic Feature Control Module A. Common causes: control module malfunction, open or short circuit in wiring harness. Estimated repair cost: $222–556.
Symptoms
- Active aerodynamic elements do not work
- Dashboard warning
- Reduced aerodynamic efficiency
Causes
- Control module malfunction
- Open or short circuit in wiring harness
- Module power problems
- Mechanical failure of moving parts
- Module software error
How to Fix
- Diagnostics using an OBD-II scanner
- Checking the module's power and control circuits
- Checking the wiring harness for damage
- Mechanical diagnostics of moving elements
- Reprogramming or replacing the module if necessary
Related codes
Error B3A20 by Vehicle Brand
FAQ
What does the B3A20 code mean?
B3A20 is an OBD-II diagnostic trouble code that indicates: Active Aerodynamic Feature Control Module A
What causes a B3A20 error code?
The most common causes of B3A20 include: Control module malfunction; Open or short circuit in wiring harness; Module power problems; Mechanical failure of moving parts.
How do I fix a B3A20 diagnostic trouble code?
To fix B3A20: Diagnostics using an OBD-II scanner. Checking the module's power and control circuits. Checking the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3A20?
Limited driving only, diagnose soon
How much does it cost to fix B3A20?
The estimated repair cost for B3A20 is $222–556. Actual cost depends on your vehicle, location, and labor rates.
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