Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a part of the car that helps it move through the air better. It's like a small computer that controls how the car's body changes shape to go faster or use less fuel.
The B3A22 code indicates an issue with the control module responsible for managing an active aerodynamic feature, which could include parts like a spoiler or grille shutters.
The Active Aerodynamic Feature Control Module C is responsible for adjusting certain aerodynamic components on the vehicle to improve performance and efficiency. This code suggests that there is a malfunction or communication issue with this specific module.
• Warning light on the dashboard
• Reduced fuel efficiency
• Unusual noise from the aerodynamic components
• Faulty Active Aerodynamic Feature Control Module C
• Wiring issues or poor connections
• Software malfunction or glitch
Aerodynamics: The study of how gases interact with moving bodies.
Control Module: A computer that controls a specific function in the vehicle.
• Perform a visual inspection of the wiring and connectors.
• Use a diagnostic scanner to check for additional codes.
• Test the functionality of the aerodynamic components.
• Repair or replace faulty wiring or connectors.
• Reprogram or update the control module software.
• Replace the Active Aerodynamic Feature Control Module C if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $600
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance checks
• Ensure software updates are applied
• Inspect wiring for wear and tear
Control Module Issue
• Have the vehicle inspected by a professional.
• Avoid high-speed driving until the issue is resolved.
Check with your vehicle manufacturer for warranty coverage on control module issues.
This code has been reported in vehicles with advanced aerodynamic features, particularly in newer models.
Moderate – It should be addressed soon to maintain vehicle efficiency and performance.
Ignoring this issue could lead to reduced vehicle performance and efficiency.
• Vehicle at operating temperature
• Aerodynamic features engaged
The control module is typically located near the affected aerodynamic component, such as near the front grille or rear spoiler.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to decreased fuel efficiency and performance.
Q: Can I still drive my car with this code?
A: Yes, but it's recommended to have it checked soon to avoid further issues.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Body and airbag faults often need a scanner that can access more than generic powertrain codes.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking power, ground, and continuity in body-system circuits.
View on Amazon
Universal · Fuse kit
Useful for electrical diagnosis when blown fuses or circuit faults are part of the troubleshooting process.
Useful when body electrical faults trace back to blown fuses or shared circuits.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.