Audi A4 B9 Q3 F3 Impulse Sender Camshaft Position Sensor 2.0 TDI 04L907601C

Audi A4 B9 Q3 F3 Impulse Sender Camshaft Position Sensor 2.0 TDI is an original component from the Engine sensors and switches group, designed for precise control of timing operation in diesel units. It is responsible for accurately monitoring the camshaft position, which allows the engine control unit to properly dose fuel and optimally control injection. Using a factory-spec sensor helps maintain stable operation of the 2.0 TDI unit and reduces the risk of diagnostic errors.

Specifications and technical data

• SKU: 04L907601C
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L907601C
• Substitutable numbers: 04L907601C, 04L 907 601 C
• Category: Engine Sensors & Switches

Function and importance of the camshaft position sensor

The camshaft position sensor in the 2.0 TDI engine is responsible for transmitting information about the current position of the camshaft relative to the crankshaft to the engine control unit. Based on this, the engine management system determines the fuel injection timing and controls the timing system operation. A functional component of this type affects:

• stable idle speed and smooth acceleration,
• proper engine starting in both cold and warm conditions,
• reduction of error codes in the controller memory,
• maintenance of proper combustion parameters in the 2.0 TDI unit.

Thanks to the use of an original Audi sensor, signal compatibility with factory controller maps is maintained, which is important for both the dynamics and durability of the power unit.

Compatibility with Audi models

The presented sensor has been designed for modern Audi group constructions, such as the A4 B9 generation and Q3 F3 generation with the 2.0 TDI engine. This means it is perfectly matched in terms of:

• mounting geometry in the cylinder head and sensor socket,
• the electrical connector used,
• signal characteristics compatible with the factory engine control unit.

Choosing a component from the same design family as the factory-installed one facilitates installation and reduces the risk of software compatibility issues.

Benefits of using an original Audi sensor

For components in the Engine sensors and switches group, signal repeatability and resistance to operating conditions in the engine compartment are crucial. The original camshaft position sensor provides:

• stable cooperation with the factory engine control unit,
• adequate resistance to temperature and vibration,
• reduced risk of accidental signal loss during operation,
• easier diagnostics in case of potential faults.

For users who want to keep their car in a configuration close to the factory state, using an original Audi component is a technically safe and predictable solution in terms of engine behavior.

Condition of the component and installation aspects

The offered sensor is an aftermarket part, which allows for economical repair of the timing system while maintaining factory part specifications. Before installation, a standard workshop procedure is recommended, including checking the socket, the wiring harness, and proper cable routing to avoid mechanical stress and signal interference.

Replacing the camshaft position sensor is a typical service operation in modern diesel units and in most cases does not require interference with the timing mechanics, however, it should always be performed in accordance with the service documentation of the given model.

Related systems and technical knowledge

When diagnosing the operation of the 2.0 TDI engine, it is worth remembering that engine refinement and exhaust emissions are also influenced by other components, such as the exhaust gas recirculation system. To better understand the relationships between engine control and exhaust circulation, the following article may be helpful: EGR: what it is and why it is worth considering used EGR valves.

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