P0505 (Audi): Defective Idle Air Control Motor, Intake Manifold Vacuum leaks, Ca… — what it means, the affected system and what to check before replacing parts.
Defective Idle Air Control Motor, Intake Manifold Vacuum leaks, Carbon buildup in the Throttle Body air passages. Source catalogue definition; confirm applicability using vehicle service information.
Affected system: Powertrain