Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the computer in your car found a problem with a part that helps the car move through the air better. It's like having a toy car with a broken wing that makes it go slower or not as smoothly.
The code B3A20 indicates an issue with the control module responsible for managing the active aerodynamic features of a vehicle, such as spoilers or air dams, which adjust to improve fuel efficiency and stability.
The Active Aerodynamic Feature Control Module A is responsible for controlling components like active grille shutters, spoilers, and other aerodynamic features that adjust based on vehicle speed and conditions to optimize performance and fuel efficiency. A fault in this module can result in improper operation of these features.
• Warning light on the dashboard
• Reduced fuel efficiency
• Unusual noises from aerodynamic components
• Faulty control module
• Damaged wiring or connectors
• Software glitch or update needed
Aerodynamic: The way air moves around things.
Control Module: A computer in the car that controls specific functions.
• Check for any other related codes
• Inspect the wiring and connectors for damage
• Test the control module with a diagnostic tool
• Replace or repair damaged wiring or connectors
• Reprogram or update the control module software
• Replace the faulty control module if necessary
• OBD-II scanner
• Multimeter
• Screwdriver set
$200 - $600
Moderate
• Ford Mustang
• Chevrolet Camaro
• Porsche 911
• Regularly inspect and maintain aerodynamic components
• Ensure software is up to date
• Avoid harsh driving conditions that may damage components
Control Module Issue
• Have the vehicle inspected by a professional
• Avoid high-speed driving until the issue is resolved
Check your vehicle's warranty for coverage on electronic control modules.
This code has become more common as vehicles incorporate more active aerodynamic features to improve efficiency and performance.
Moderate – While not immediately dangerous, it can affect vehicle performance and fuel efficiency.
Operating a vehicle with compromised aerodynamic features may not comply with safety regulations.
• Vehicle stationary with ignition on
• Vehicle at various speeds to test aerodynamic feature response
The control module is typically located near the front of the vehicle, often behind the grille or in the engine bay.
Q: What happens if I ignore this code?
A: Ignoring this code can lead to reduced fuel efficiency and potential damage to aerodynamic components.
Q: Can I drive my car with this code?
A: Yes, but it's best to get it checked soon to avoid further issues.
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