B3A42

Active Aerodynamic Feature B Actuator Temperature Too Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–333 (est.)

Symptoms

Active aerodynamics not working
Error message on the instrument panel
Reduced efficiency at high speeds

Causes

Actuator temperature sensor malfunction
Broken or damaged wiring
Problems with actuator power supply
Mechanical failure of the actuator
Control unit malfunction

How to Fix

Check the integrity of wiring and connections
Check the actuator power supply
Test the temperature sensor
Check the mechanical operation of the actuator
If necessary, replace faulty components
Reset the error and check the system operation

Related codes

B3A40 B3A41 B3A43