Audi Q3 F3 2.0 TDI Oxygen NOX Sensor Module Control Unit 05L907807AN

The Audi Q3 F3 2.0 TDI NOx Sensor is a component from the Lambda Sensors and O2 Sensors category, designed for diesel systems in modern Audi models. It enables precise measurement of nitrogen oxides in exhaust gases, supporting the efficient operation of the exhaust gas purification system and stable engine performance. This is a solution for users who expect a technically matched component for their Audi Q3 with an automatic transmission.

Specifications and technical data

• SKU: 05L907807AN
• Mark: Audi
• Condition: Used
• OEM Part Number: 05L907807AN
• Substitutable numbers: 05L907807AN, 05L 907 807 AN, 0281008251, 0 281 008 251
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Oxygen Sensors

Purpose and Function in the Exhaust System

The presented NOx sensor operates within the diesel engine's exhaust system, monitoring exhaust gas composition for nitrogen oxide content. Based on its signal, the engine control unit adjusts fuel injection and the emission reduction system, helping to maintain optimal parameters for the 2.0 TDI unit. This allows for reduced smoke, more stable idling, and more consistent performance in daily use.

Benefits of Using a Functional NOx Sensor

A properly functioning NOx sensor in the Audi Q3 F3 translates into a number of practical benefits in vehicle operation:

• more predictable throttle response in the diesel engine,
• reduced risk of the unit entering limp mode due to emission system errors,
• stable cooperation with the automatic transmission, especially at low and medium loads,
• better control over exhaust gas aftertreatment in the purification system.

For the user, this means a more comfortable drive, fewer unplanned service visits, and easier diagnostics of potential exhaust emission-related faults.

Technical Characteristics and Vehicle Integration

The NOx sensor in this offer belongs to the group of measurement elements that work directly with the engine control electronics. It is designed to operate in the demanding thermal and chemical conditions of the exhaust system, and its construction allows for reliable exhaust parameter readings across a wide range of loads. The component is intended for diesel units where the engine control unit uses sensor data for real-time correction of injection strategy and NOx reduction system control.

The element comes from the group of parts dedicated to the Audi brand, which promotes proper fit in terms of connectors, cable length, and signal characteristics. This ensures that integration with the vehicle's electrical system proceeds in an organized manner, and the installation itself is limited to correctly seating the sensor in the exhaust system and connecting the harness.

Condition, Application, and Selection by Technical Data

The offered NOx sensor is a used element, allowing for an economical replacement of a damaged component while maintaining compliance with factory specifications. For measurement electronics, matching by OEM part number and interchangeable numbers is particularly important – this allows verification of compatibility with a specific engine version and equipment configuration.

To facilitate selection, the product card provides data such as stock identifier, manufacturer's part number, reference numbers, as well as information about the brand, fuel type, and gearbox type. These parameters are marked with appropriate attributes, including SKU, OEM Part Number, Interchangeable Numbers, Brand, Condition, Fuel Type, and Gearbox Type, which simplifies filtering and comparing components in the store.

Substantive Support and Related Products

If you are considering installing a used NOx sensor or another engine electronics component and want to better understand selection by numbers, hardware and software compatibility, you will find practical tips in the Global Parts guide: Used Automotive Electronics Onboard – Why Choose Second-Hand ECUs and Sensors?

If you also need other measurement and control elements for your Audi, including additional sensors and probes that work with the exhaust system and engine control unit, check the available parts in the Audi Lambda Sensors and O2 Sensors category.