VW Volkswagen Caddy Maxi 2k NOx Lambda Sensor 2.0 TDI Diesel 04L907805DD

VW Volkswagen Caddy Maxi 2k NOx Lambda Sensor 2.0 TDI Diesel is an original exhaust system component designed for diesel engines, responsible for the precise measurement of nitrogen oxide and oxygen concentrations in exhaust gases. Thanks to this sensor, the engine control unit can effectively manage the combustion process and the exhaust gas treatment system, which translates into stable power, lower fuel consumption, and compliance with emission standards. This solution is particularly important for the diagnostics and repair of 2.0 TDI Diesel systems, where the accuracy of NOx measurement is crucial for the proper operation of the entire powertrain.

Specifications and technical data

• SKU: 04L907805DD
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 04L907805DD
• Substitutable numbers: 04L907805DD, 04L 907 805 DD
• Fuel type: Diesel
• Category: Oxygen Sensors

Function and role of the NOx sensor in the exhaust system

The NOx sensor in the Caddy Maxi 2K model operates in the exhaust stream, monitoring gas composition after or near the catalytic converter. Based on signals from the probe, the engine control unit adjusts the fuel dose, exhaust gas recirculation operation, and the regeneration strategy for exhaust treatment components. A properly functioning sensor:

• supports the maintenance of the correct mixture in the diesel engine,
• helps reduce the emission of nitrogen oxides and particulate matter,
• reduces the risk of the powertrain entering limp mode,
• facilitates passing periodic technical inspections related to exhaust emissions.

For 2.0 TDI Diesel units, this is a strategic component in terms of exhaust system durability and the correct operation of engine control systems.

Benefits of using an original Volkswagen NOx lambda sensor

Using an original sensor from the Lambda probes and O2 sensors group ensures the correct signal characteristics and compatibility with the factory control unit software. In practice, this means:

• stable engine operation without unwanted idle fluctuations,
• consistency with factory injection maps and emission reduction strategies,
• reduced risk of exhaust-related error codes appearing in the control unit memory,
• easier diagnostics during future inspections and repairs.

This dismantled part, sourced from an original installation, allows for maintaining factory performance parameters while optimizing service costs.

Condition, selection, and installation of the sensor

The offered sensor is a used component, which, in the case of exhaust electronics, allows for an economical repair while maintaining the manufacturer's original specifications. Before installation, it is worth verifying compatibility with the specific 2.0 TDI Diesel engine version and vehicle model year using the OEM part number and interchangeable numbers available in the technical specifications.

During installation, it is recommended to:

• apply the appropriate tightening torque in the exhaust system socket,
• check the condition of the electrical harness and connectors,
• perform adaptation or clear error codes in the control unit after replacement,
• check the probe's operating parameters using computer diagnostics after starting the engine.

This approach increases the chances of trouble-free operation and the correct functioning of the emission reduction system.

Why consider used exhaust electronics

In the case of components such as NOx sensors, lambda probes, or control modules, choosing a used component from a reliable source can be a reasonable compromise between cost and functionality. If you want to better understand when used automotive electronics are a good solution and how to select them safely, see the article Second life for electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?.

To further ensure the durability of installed dismantled parts, it is worth learning practical tips regarding operation and maintenance – you will find them in the guide How to extend the service life of used car parts?.

Related Volkswagen exhaust system components

If you are planning a comprehensive repair or upgrade of the exhaust system area in your Volkswagen and need other components from the same group, such as additional probes, oxygen sensors, or exhaust measurement elements, check the available parts in the category Volkswagen Lambda probes and O2 sensors.