P0102 (Audi): The Mass Airflow Sensor (MAF) Sensor is unplugged or the wiring is… — what it means, the affected system and what to check before replacing parts.
The Mass Airflow Sensor (MAF) Sensor is unplugged or the wiring is damaged, Loose or corroded electrical terminals in the MAF Sensor circuit, Faulty MAF Sensor. Source catalogue definition; confirm applicability using vehicle service information.
Affected system: Powertrain