B3A27 — Active Aerodynamic Feature Control Module A Power Mode Circuit Performance

B3A27: Active Aerodynamic Feature Control Module A Power Mode Circuit Performance — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Active Aerodynamic Feature Control Module A Power Mode Circuit Performance. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Body

Also written as: B3A27-00, B3A2700 (some scan tools add the fault-type byte, e.g. -00).