B3A34

Active Aerodynamic Feature A Actuator Position Sensor Not Learned

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Incorrect operation of the active aerodynamic element
Error message on the dashboard
Reduced aerodynamic efficiency

Causes

Lack of sensor calibration after replacement
Position sensor malfunction
Open or shorted wiring harness
Problems with the electronic control unit

How to Fix

Check the integrity of the wiring harness
Check the serviceability of the position sensor
Perform sensor calibration
Replace sensor if necessary
Reset the error using an OBD-II scanner

Related codes

B3A35 B3A36 U0100