Mercedes W177 W247 Exhaust Pressure Sensor DPF Exhaust Hoses A0009055307

Mercedes W177 W247 Exhaust Pressure Sensor DPF Exhaust Hoses is a component from the Lambda sensors and O2 sensors group, designed for precise measurement of exhaust gas pressure in the DPF system of Mercedes vehicles. It enables the engine control unit to function correctly, supports the control of the diesel particulate filter regeneration process, and helps maintain stable exhaust emission parameters.

Specifications and technical data

• SKU: A0009055307-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0009055307
• Substitutable numbers: A0009055307, A 000 905 53 07
• Category: Oxygen Sensors

Purpose and function of the DPF exhaust pressure sensor

The offered sensor with hoses works with the exhaust system in Mercedes compact class models, such as the W177 and W247, where it is responsible for monitoring the pressure difference before and after the DPF filter. Based on the signal from this component, the engine control unit can:

• assess the filling level of the diesel particulate filter,
• initiate and control the DPF regeneration process,
• adjust the fuel injection and boost strategy,
• react to irregularities by recording error codes in the ECU memory.

A stable signal from the sensor translates into smoother engine operation, reduced risk of entering limp mode, and compliance with exhaust emission standards.

Construction, connectors, and integration with the installation

The DPF exhaust pressure sensor is integrated with hoses that supply pressure from the appropriate points of the exhaust system, which facilitates installation and reduces the number of potential leaks. The design includes:

• a measuring body with an electrical output for the vehicle wiring harness,
• pressure hoses leading to the DPF filter,
• an electrical connector adapted for installation in Mercedes vehicles.

Thanks to the factory geometry and the appropriate shaping of the hoses, this component allows for consistent routing of the installation in the engine compartment, without the need for modifications or the use of additional adapters.

Benefits of using an original sensor in the Mercedes W177 / W247

In vehicles equipped with a DPF filter, the quality of the signal from the pressure sensor has a direct impact on the durability of the filter and driving comfort. Using a dedicated solution for Mercedes ensures, among other things:

• proper cooperation with the engine control unit software – no need for parameter adaptation,
• appropriate measurement characteristics matched to the specific engine unit,
• reduced risk of diagnostic errors associated with incompatible replacements,
• easier diagnostics during subsequent service inspections.

This solution is particularly important in cars used mainly in urban traffic, where frequent start cycles and short trips increase the load on the DPF system.

Characteristics of the used component and selection by part numbers

The presented sensor belongs to the group of used components, which allows for reducing repair costs while maintaining the original manufacturer's specifications. In practice, this means the possibility of restoring the correct operation of the exhaust system without the need to invest in a new OEM part. Selection is based on the part number and interchangeable numbers, which makes it easier to find the right variant for a specific engine configuration.

To better understand the principles of selecting and installing used modules and sensors, it is worth reading the guide describing compatibility issues, markings, and installation procedures: used automotive electronics – ECU modules and second-hand sensors.

Expansion of the measurement system in Mercedes – Lambda sensors and O2 sensors

The emission control system in modern Mercedes vehicles is based on the cooperation of many measuring elements, including lambda sensors and O2 sensors, which, together with the DPF exhaust pressure sensor, form a coherent system for monitoring exhaust composition. 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 oxygen sensors, pre- and post-catalytic converters, or elements monitoring the mixture composition, check the available parts in the category Mercedes Lambda sensors and O2 sensors.