NOX Sensor Mercedes C117 W247 OM654 Lambda Oxygen Probe A0009052012

NOX Sensor Mercedes C117 W247 OM654 Lambda Oxygen Probe is a specialized exhaust system component responsible for the precise measurement of exhaust gas composition and nitrogen oxide content in modern Mercedes engines. Thanks to its factory design intended for specific models with the OM654 engine, the sensor ensures stable operation of the engine control unit and helps maintain correct emission parameters. This is a solution for users who expect proven measurement electronics that comply with factory standards.

Specifications and technical data

• SKU: A0009052012
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0009052012
• Substitutable numbers: A0009052012, A 000 905 20 12
• Category: Oxygen Sensors

Function and application of the lambda probe / NOX sensor

The presented sensor belongs to the Lambda probes and O2 sensors group, which are components responsible for monitoring the fuel-air mixture composition and exhaust gas quality. In OM654 units installed in C117 and W247 bodies, it plays a key role in:

• continuous measurement of oxygen and nitrogen oxide content in exhaust gases,
• transmitting data to the engine control unit in real time,
• supporting the operation of exhaust gas treatment systems, including NOX reduction systems,
• maintaining stable engine operation under various load conditions.

As a result, the controller can precisely adjust the fuel dose and operating parameters, which promotes smooth driving and reduces the emission of harmful compounds.

Benefits of using an original sensor in Mercedes OM654

Selecting the correct NOX sensor for a Mercedes with an OM654 engine has a direct impact on the engine's refinement and the durability of other exhaust system components. Using a dedicated solution for the C117 and W247 allows for:

• stable combustion parameters – reducing the risk of a mixture that is too rich or too lean,
• efficient cooperation with the factory controller software,
• better control over the regeneration process and the operation of exhaust gas treatment systems,
• reducing the risk of emission-related errors appearing in the controller's memory.

This is particularly important in modern diesel units, where the accuracy of exhaust gas measurement translates into the correct operation of the entire powertrain.

Characteristics of the used component

The offered sensor belongs to the vehicle electronics group in used condition, which allows combining the functionality of an original component with an attractive price. This type of solution is often chosen for:

• diagnostics and clearing of exhaust emission-related errors,
• exhaust system repairs following a failure or wear of the factory component,
• optimizing service costs while maintaining compliance with the vehicle's design.

A properly selected, used NOX sensor can effectively restore the correct operation of the engine control system without the need to invest in a new subassembly.

OEM selection and electronics compatibility

When choosing a lambda probe or NOX sensor for a Mercedes, it is crucial to match it based on the manufacturer's markings, hardware and software versions, and the specific engine variant. In practice, this means it is necessary to verify compatibility with the OEM number and the configuration of the given vehicle. A detailed discussion of the principles for selecting used modules and sensors, including HW/SW compatibility issues and working with OEM numbers, can be found in the guide: Used automotive electronics – how to safely select ECU modules and sensors.

Expanding the measurement system in Mercedes

If you are planning a comprehensive repair or modernization of the exhaust system area in your Mercedes and need other elements 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.