Mercedes W204 W207 W212 M270 Air Charge Pressure Sensor A0091532228

Mercedes W204 W207 W212 M270 Air Charge Pressure Sensor is a component from the Air and fuel intake sensors group, responsible for the precise measurement of boost pressure in the intake system. A properly functioning sensor of this type ensures stable engine operation, optimal fuel dosing, and correct engine control unit response to load changes.

Specifications and technical data

• SKU: A0091532228
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0091532228
• Substitutable numbers: A0091532228, A 009 153 22 28
• Category: Air Intake & Fuel Sensors

The role of the boost pressure sensor in a Mercedes engine

The air charge pressure sensor in M270 series engines used in Mercedes W204 and W207 models is responsible for transmitting information about the current pressure in the intake manifold to the control unit. Based on this data, the control system adjusts the fuel dose, corrects turbocharger operation, and monitors combustion parameters.

A functional component of this type helps maintain:

• stable idle speed and smooth acceleration,
• correct dynamics across the full rev range,
• exhaust emission control in accordance with manufacturer specifications,
• reduced risk of the engine entering limp mode due to incorrect readings.

Benefits of using an original Mercedes sensor

Using an original sensor from the Air and fuel intake sensors group instead of a worn or faulty replacement translates into high measurement repeatability and proper cooperation with the factory control unit software. A component designed for the specific M270 engine family ensures the correct measurement range and appropriate signal characteristics.

The main advantages of this solution include:

• maintaining the factory operating parameters of the engine,
• lower risk of diagnostic errors related to the boost system,
• better predictability of engine response to load compared to generic replacements.

Product characteristics and application

Mercedes W204 W207 W212 M270 Air Charge Pressure Sensor belongs to the group of electronic components mounted in the intake system, in the immediate vicinity of air hoses or the intake manifold. Its task is to continuously measure the air pressure supplied by the turbocharger and transmit the signal to the engine control unit.

The product is sourced from dismantling, which allows for an economical replacement of the component while maintaining the original manufacturer's specifications. This is a particularly beneficial solution for vehicles in intensive use, where both proper system operation and rational service costs are important.

Selection by part numbers and compatibility

When selecting a boost pressure sensor for a specific Mercedes vehicle, it is crucial to compare the OEM part number and any interchangeable numbers with the vehicle's data. Verification by part numbers helps avoid electrical and mechanical compatibility issues and ensures proper cooperation with the control unit software.

To better understand the principles of selecting used modules and sensors, including the importance of OEM numbers and hardware/software compatibility, it is worth reading the guide: Used automotive electronics – ECU modules and second-hand sensors.

Application area and intake system expansion

The boost pressure sensor operates in the intake system area, in the immediate vicinity of air hoses, the intercooler, and the manifold. In the case of modernization or broader repairs in this area – including, for example, replacing other sensors from the same group, air temperature measurement elements, or components related to fuel supply – it is worth considering a comprehensive service approach. If you are planning a comprehensive repair or modernization of the engine area in your Mercedes and need other elements from the same group, such as additional pressure sensors, air temperature sensors, or fuel parameter measurement components, check the available parts in the Mercedes air and fuel intake sensors category.

Summary

The original air charge pressure sensor designed for M270 units in Mercedes W204 and W207 models is a sensible choice for users expecting stable engine operation and proper cooperation with factory electronics. A used component with preserved functionality allows for restoring the correct parameters of the intake system, reducing the risk of control unit errors, and maintaining proper vehicle dynamics at controlled repair costs.