Skoda Superb 3V Exhaust NOX Lambda Oxygen Sensor 2.0 TDI Diesel DFEA 04L907805E

Skoda Superb 3V Exhaust NOX Lambda Oxygen Sensor 2.0 TDI Diesel DFEA is a specialized component from the Lambda sensors and O2 sensors category, designed for diesel systems. It is responsible for the precise measurement of nitrogen oxides and exhaust gas composition, which allows the engine control unit to effectively manage the combustion process and the operation of the exhaust gas treatment system in 2.0 TDI Diesel units.

Specifications and technical data

• SKU: 04L907805E
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L907805E
• Substitutable numbers: 04L907805E, 04L 907 805 E
• Fuel type: Diesel
• Category: Oxygen Sensors

Function and application of the NOX sensor / lambda sensor

The NOX sensor, combined with the lambda sensor function in a 2.0 TDI Diesel engine, plays a key role in monitoring exhaust gas composition before and/or after the treatment system. Based on the signal from this component, the engine control unit can:

• correct the fuel dose in closed-loop mode,
• optimize the operation of the nitrogen oxide emission reduction system,
• maintain stable engine operation under various load conditions,
• reduce fuel consumption while maintaining required emission standards.

For diesel engines, a properly functioning NOX sensor / lambda sensor is essential to avoid power loss, increased smoke, entering limp mode, and the appearance of errors related to the exhaust system.

Benefits of using an original Audi component

The presented sensor comes from the Audi line, which means it maintains factory operating parameters and full integration with the vehicle's electronics. In practice, this translates into:

• a stable measurement signal matched to the maps in the engine control unit,
• proper cooperation with ECU software without the need for modifications,
• reduced risk of diagnostic errors appearing after installation,
• maintaining the factory operating characteristics of the 2.0 TDI Diesel unit.

Choosing a used, original component is often a reasonable compromise between cost and quality – especially in the case of advanced electronic components such as NOX sensors and lambda sensors.

Technical characteristics and integration with the exhaust system

As an element of the Lambda sensors and O2 sensors category, this NOX sensor is designed to work in a demanding environment of high temperature and variable exhaust gas composition. The design includes:

• an integrated measurement module responsible for analyzing exhaust gas composition,
• a part mounted in the exhaust stream, ensuring direct contact with exhaust gases,
• a signal cable for communication with the vehicle's electrical system.

Thanks to this, the engine control unit receives fast and repeatable information about the current state of the exhaust gases, which is particularly important in modern diesel units, where the margin of tolerance for measurement errors is small.

Why it is worth choosing a used NOX sensor / lambda sensor

In the case of advanced electronic components such as NOX sensors, choosing a used component can be cost-effective, provided it comes from a verified source and complies with OEM requirements. This allows for a significant reduction in repair costs while maintaining the appropriate quality of the exhaust system and engine operation.

If you want to better understand when used automotive electronics are a good choice and how to safely select such elements, it is worth reading the guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.

Additionally, to select used components for a specific car even more effectively and avoid compatibility mistakes, you can use the practical tips described in the article: No more bad purchases! How to professionally select used car parts.

Related elements from the same group

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 additional probes, oxygen sensors, or components monitoring exhaust gas composition, check the available parts in the Audi lambda sensors and O2 sensors category.

Summary

Skoda Superb 3V Exhaust NOX Lambda Oxygen Sensor 2.0 TDI Diesel DFEA is an advanced measurement component designed for diesel engines that supports the proper operation of the exhaust system and the engine control unit. Using an original Audi component allows you to maintain proper combustion parameters, reduce exhaust emissions, and minimize the risk of diagnostic errors, which translates into stable and predictable vehicle operation.