B3A44

Active Aerodynamic Feature B Position Sensor 1 Circuit High Voltage

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Disabling the active aerodynamic element
Error message on the dashboard
Poor handling at high speeds

Causes

Short circuit in the sensor circuit
Broken or damaged wiring harness
Position sensor malfunction
Problems with the control unit

How to Fix

Check the integrity of the wiring harness and contacts
Measure resistance and voltage at the sensor
Replace position sensor if necessary
Check the operation of the control unit

Related codes

B3A43 B3A45 B3A46