Genuine OEM Audi Charge Air Pressure Sensor, part number 06E906401. This sensor plays a crucial role in engine management by accurately measuring the pressure of the air within the intake manifold or charge air system. The diagram indicates its installation on a component of the engine's intake or supercharger assembly, where it provides vital data to the engine control unit. This compact sensor weighs approximately 0.03 kg and is essential for maintaining correct air-fuel mixture and boost control. Choosing a genuine OEM sensor ensures precise calibration, accurate signal output, and seamless integration with the vehicle's engine management system, which is critical for optimal engine performance and fuel efficiency.