P0101 (Audi): Large vacuum leaks, Split Intake Air Boot or PCV Hose, Defective i… — what it means, the affected system and what to check before replacing parts.
Large vacuum leaks, Split Intake Air Boot or PCV Hose, Defective intake manifold gaskets, Mass Airflow Sensor (MAF), Mass Air Flow Sensor circuit and or wiring problems, Defective Barometric Pressure Sensor, Dirty or contaminated Mass Air Flow Sensing wire or filament, PCM software needs to be updated. Source catalogue definition; confirm applicability using vehicle service information.
Affected system: Powertrain