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 the car found a problem with the part that helps the car move through air better. It thinks there's too much electricity going to it.
The vehicle's control module has detected a high voltage condition in the power mode circuit of the active aerodynamic feature control module C.
The B3A2C code indicates that the control module responsible for managing the active aerodynamic features (such as adjustable spoilers or vents) has detected an abnormally high voltage in its power mode circuit. This could be due to a short circuit, faulty wiring, or a malfunctioning control module.
• Warning light on the dashboard
• Reduced aerodynamic performance
• Unusual noise from aerodynamic components
• Faulty active aerodynamic feature control module
• Short circuit in wiring
• Damaged or corroded connectors
Aerodynamic: The way air moves around things.
Control Module: A computer in the car that controls certain functions.
• Use a diagnostic scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the voltage levels in the circuit.
• Repair or replace damaged wiring.
• Replace faulty connectors.
• Replace the active aerodynamic feature control module if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regularly inspect wiring for damage.
• Ensure connectors are clean and secure.
• Keep the vehicle's electrical system maintained.
Electrical Circuit Issue
• Avoid high-speed driving until the issue is resolved.
• Consult with a certified mechanic for accurate diagnosis.
Check with your vehicle's manufacturer for warranty coverage on electrical components.
This code has been associated with vehicles that have advanced aerodynamic features, often seen in sports cars and luxury vehicles.
Moderate – It should be addressed soon to ensure optimal vehicle performance.
Driving with this issue may not be safe at high speeds due to reduced aerodynamic performance.
• Vehicle stationary with ignition on.
• Test during normal driving conditions.
The active aerodynamic feature control module is typically located near the vehicle's front or rear, depending on the specific aerodynamic feature it controls.
Q: Can I drive with this code?
A: It's not recommended to drive at high speeds until the issue is fixed.
Q: What happens if I ignore this code?
A: Ignoring it may lead to reduced vehicle performance and increased wear on aerodynamic components.
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.