Audi A3 V8 1.6 TDI CLHA Air Flow Mass Meter Sensor Control Unit 04L906461B

Audi A3 V8 1.6 TDI CLHA Air Flow Mass Meter Sensor Control Unit is a component from the Air and fuel intake sensors group, designed for Audi diesel engines. It is responsible for the precise measurement of the intake air volume, which allows the engine control unit to properly dose fuel and ensure stable operation of the power unit. This is a solution for users who expect a proven component with factory performance characteristics.

Specifications and technical data

• SKU: 04L906461B
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L906461B
• Substitutable numbers: 04L906461B, 04L 906 461 B
• Fuel type: Diesel
• Category: Air Intake & Fuel Sensors

Function of the air flow meter in an Audi diesel engine

The air flow meter in the 1.6 TDI unit measures the mass of air drawn into the intake manifold. Based on this signal, the controller selects the fuel dose, corrects the operation of the injection system, and manages exhaust gas recirculation. A properly functioning sensor translates into:

• stable idle speed and smooth acceleration,
• more predictable throttle response,
• maintaining the correct mixture composition across the entire load range,
• reduced smoke emissions and improved refinement of the diesel engine.

Benefits of using an original Audi sensor

The component from this group has been designed specifically for the parameters of the 1.6 TDI unit, thanks to which it maintains the correct signal characteristics across the entire flow range. In practice, this means:

• compatibility with the factory engine control unit software,
• proper cooperation with the injection system and turbocharging system,
• reduced risk of diagnostic errors related to incorrect air measurement,
• maintaining factory performance and fuel consumption in the diesel engine.

For the user, this means predictable car behavior, without the need for additional adaptations or software modifications.

Condition, selection, and installation

The offered air flow meter is in used condition, which allows for an economical repair of the intake system while maintaining the original specification. It is worth basing the selection of the part on the manufacturer's markings and engine configuration to ensure full compatibility with the installation in the Audi A3 V8 1.6 TDI CLHA.

The installation of the air flow meter in most cases comes down to:

• removing the existing sensor from the intake duct,
• checking the condition of electrical connectors and seals,
• seating the new component in the designated slot,
• connecting the wiring harness and performing potential parameter adaptation in the controller, if required by the service procedure.

Application in the air and fuel intake system

As part of the Air and fuel intake sensors category, this air flow meter works with other elements of the intake and fuel system, such as the air filter, intake manifold, or injection system. A functional sensor helps maintain:

• the correct fuel dose across the entire RPM range,
• appropriate dynamics during acceleration,
• stable diesel engine operating parameters under various load conditions.

This is particularly important in modern diesel units, where the accuracy of air measurement has a direct impact on exhaust emissions and the durability of components.

Technical support and additional information

To better understand the relationship between the operation of the air flow meter and the engine supply system, it is worth familiarizing yourself with material discussing the diagnostics and operation of the fuel system, including the selection of components by factory numbers – this is described in detail in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as boost pressure sensors, air temperature sensors, or other measuring components, check the available parts in the category Audi air and fuel intake sensors.