Volkswagen Transporter T5 Golf MK4 Manifold Air MAP Pressure Sensor 0261230266

Volkswagen Transporter T5 Golf MK4 Manifold Air MAP Pressure Sensor is a component from the Air and fuel intake sensors group, responsible for precise pressure measurement in the intake manifold and the proper operation of the fuel system. This used, original Volkswagen component allows for maintaining factory engine performance parameters and stable communication with the ECU.

Specifications and technical data

• SKU: 0261230266
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 0261230266
• Substitutable numbers: 0261230266, 026 123 026 6, 038906461B, 038 906 461 B
• Part type: Sensor
• Category: Air Intake & Fuel Sensors

Function and application of the MAP sensor

The MAP pressure sensor in Transporter T5 and Golf MK4 models measures air pressure in the intake manifold and transmits a signal to the engine control unit. Based on this, the ECU determines the fuel dose, injection timing, and ignition corrections, which affects engine performance, fuel consumption, and exhaust emissions.

A functional sensor from this group helps reduce symptoms such as power loss, rough idling, increased fuel consumption, or the engine entering limp mode. Replacing it with the correct component is particularly important after intake system modifications or when errors related to boost pressure appear.

Benefits of using an original Volkswagen sensor

Choosing a component from the Volkswagen OE line ensures:

• Full electrical compatibility with the factory wiring harness and engine controller.
• Correct measurement characteristics matched to the injection maps used in the specific engine.
• A stable signal across the entire load range, which translates into predictable throttle response.
• Reduced risk of diagnostic errors resulting from incorrect calibration of aftermarket replacements.

For Transporter T5 and Golf MK4 users, this means maintaining factory dynamics, better performance repeatability, and easier diagnostics in the future.

Condition, verification, and selection by part numbers

The offered item is in used condition, which allows for economical repair while maintaining original manufacturing quality. Before being listed, such sensors are standardly verified for reading accuracy, signal stability, and the absence of connector damage.

Selecting the correct MAP sensor for a specific engine version should be based on the OEM number and interchangeable part numbers – this helps avoid hardware and software compatibility issues. In case of doubt, it is recommended to compare the markings with the removed part or verify via the VIN number in the manufacturer's catalog.

Integration with the intake and fuel system

As part of the Air and fuel intake sensors group, this sensor works with the mass air flow sensor, the boost system, and injection control. Correct manifold pressure reading is crucial for:

• maintaining the proper air-fuel ratio under various load conditions,
• proper operation of exhaust emission control systems,
• protecting the turbocharger from incorrect boost pressure,
• correct operation of adaptations in the engine controller.

Replacing a faulty sensor with the correct component restores proper cooperation of all intake and fuel system sub-assemblies, which is particularly important in heavily used commercial vehicles such as the Transporter T5.

If you are planning a comprehensive repair or upgrade of the engine area in your Volkswagen and need other components from the same group, such as pressure sensors, temperature sensors, or airflow measurement elements, check the available parts in the Volkswagen air and fuel intake sensors category.

Technical support and additional materials

When selecting a used MAP sensor, it is worth paying attention to the compatibility of markings, the controller version, and the mounting method in the manifold. Practical tips regarding the selection and installation of used sensors and electronic modules can be found in the Global Parts guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?.

For drivers planning a wider range of service work on their vehicle, a review of the most frequently replaced consumable components may also be useful – you can find it in the article TOP 10 most frequently replaced parts in your car, which helps to plan vehicle maintenance in an informed and economical way.