B3A4D — Active Aerodynamic Feature C Position Not Plausible

B3A4D: Active Aerodynamic Feature C Position Not Plausible — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Active Aerodynamic Feature C Position Not Plausible. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Body

Also written as: B3A4D-00, B3A4D00 (some scan tools add the fault-type byte, e.g. -00).