Mercedes-Benz E-Class W207 W212 CDI NOx Sensor Lambda Probe Diesel A0009053506

Mercedes-Benz E-Class W207 W212 CDI NOx Sensor Lambda Probe Diesel is a specialized exhaust system component responsible for precise exhaust gas composition measurement and nitrogen oxide emission control. This allows the engine control unit to maintain optimal operating parameters, which translates into stable power, lower fuel consumption, and proper operation of exhaust gas treatment systems. This solution is designed for demanding users who expect consistency in the performance of electronics and the exhaust system in their E-Class models.

Specifications and technical data

• SKU: A0009053506
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0009053506
• Substitutable numbers: A0009053506, A 000 905 35 06, BG
• Fuel type: Diesel
• Category: Oxygen Sensors

Function and application in the Mercedes-Benz E-Class

The presented Mercedes-Benz E-Class W207 W212 CDI NOx Sensor Lambda Probe Diesel operates in the diesel engine exhaust system, monitoring oxygen and nitrogen oxide content in the exhaust gases. Based on this data, the engine control unit corrects the fuel dose, fuel injection system operation, and emission reduction systems, which is crucial for the proper functioning of modern diesel units in the Mercedes-Benz E-Class W207 and W212.

This component belongs to the Lambda probes and O2 sensors group, which are essential for maintaining compliance with emission standards and ensuring smooth, predictable engine performance. A functional sensor helps reduce smoke, prevents the unit from entering emergency mode, and supports long-term, uniform operation of the drivetrain.

Benefits of using a functional Mercedes-Benz E-Class W207 W212 CDI NOx Sensor Lambda Probe Diesel

In diesel engines, precise exhaust gas composition measurement has a direct impact on the durability and refinement of the power unit. Using the appropriate Mercedes-Benz E-Class W207 W212 CDI NOx Sensor Lambda Probe Diesel in the E-Class W207/W212 allows for, among other things:

• more stable operation at idle and under load,
• better throttle response due to correct fuel dose adjustment,
• reduced risk of clogging exhaust system components,
• reduced probability of emission-related errors appearing.

For the user, this means higher vehicle predictability, fewer unplanned service visits, and more effective utilization of the diesel engine's potential.

Technical characteristics and integration with the diesel system

The discussed component has been designed to work with diesel engines where the emission control system requires continuous monitoring of exhaust parameters. The Mercedes-Benz E-Class W207 W212 CDI NOx Sensor Lambda Probe Diesel sends a signal to the engine control unit, which then manages the operation of the injection system and exhaust treatment systems, such as catalytic converters or particulate filters.

Proper selection of the component according to the manufacturer's markings and reference numbers is important for maintaining full compatibility with the vehicle's electronics. This makes it possible to avoid communication problems in the vehicle network and ensures correct signal interpretation by the control unit.

Condition, origin, and practical installation tips

The product comes from the Mercedes brand and is a used component, which allows for an economical restoration of exhaust system efficiency while maintaining the original manufacturer's specifications. Before installation, it is recommended to verify compatibility with the specific engine version and perform computer diagnostics after installation to confirm the sensor's correct operation in the system.

In practice, installation should be performed with the appropriate tightening torque and care for the condition of the wiring harness and connectors. A correctly installed Mercedes-Benz E-Class W207 W212 CDI NOx Sensor Lambda Probe Diesel allows for the quick restoration of correct engine operating parameters and minimizes the risk of recurring emission-related errors.

Technical support and electronics selection

When selecting components such as sensors, probes, or control modules, it is worth using expert knowledge and diagnostic tools. A detailed discussion of the principles for selecting used modules and sensors, including the importance of OEM markings and hardware/software compatibility, can be found in our guide: Used automotive electronics – ECU modules and second-hand sensors.

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