VW Golf SV Audi A3 8V 1.5 TSI TFSI MAP Boost Pressure Sensor 04E906051H

VW Golf SV Audi A3 8V 1.5 TSI TFSI MAP Boost Pressure Sensor is an original component from the Air and fuel intake sensors group, designed for precise pressure measurement in the intake system of TSI/TFSI petrol engines. Thanks to its factory origin from the Volkswagen line, it ensures proper cooperation with the control electronics and stable operating parameters of the power unit.

Specifications and technical data

• SKU: 04E906051H
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 04E906051H
• Substitutable numbers: 04E906051H, 04E 906 051 H
• Category: Air Intake & Fuel Sensors

Purpose and function of the MAP sensor

The presented MAP sensor is responsible for measuring the pressure in the intake manifold and transmitting this data to the engine control unit. Based on the signal from the sensor, the controller selects the fuel dose, ignition timing, and boost strategy, which translates into proper operation, adequate dynamics, and reduction of knocking combustion in 1.5 TSI/TFSI units used in VW Golf SV and Audi A3 8V models.

Using the correct pressure sensor is particularly important in modern turbocharged engines, where measurement accuracy affects the thermal safety of the unit, exhaust emissions, and power stability across the full load range.

Advantages of using an original Volkswagen sensor

The original sensor from the Volkswagen line has been designed to work with the factory engine control software, which minimizes the risk of diagnostic errors and incorrect readings. Compared to replacements, it ensures:

• signal characteristic consistency with maps stored in the ECU,
• stable operation in a wide range of temperatures and pressures,
• proper response to rapid changes in engine load,
• better parameter repeatability over a long period of operation.

As a result, the MAP sensor helps maintain proper engine performance, limit excessive fuel consumption, and reduce the risk of the unit entering limp mode caused by incorrect pressure readings.

Performance characteristics and installation

The element belongs to the Air and fuel intake sensors group, which means it works directly with the intake system and mixture control. Installing the MAP sensor in most cases comes down to seating it in the designated intake manifold socket and connecting the factory electrical harness, which facilitates service and shortens replacement time.

The product is offered as a used part, which allows for an economical repair of the engine control system while maintaining the manufacturer's original specification. This type of solution is often chosen when diagnosing faults related to boost pressure errors, unstable idle operation, or power loss in 1.5 TSI/TFSI engines.

Selection by numbers and compatibility with electronics

When selecting a MAP sensor for a VW Golf SV or Audi A3 8V, it is crucial to match it by the OEM part number and any interchangeable numbers, as well as to take into account the 1.5 TSI/TFSI engine version. This allows avoiding electrical and software compatibility problems, such as incorrect values in measuring blocks or the appearance of errors in the controller's memory.

To better understand the principles of selecting used sensors and other engine electronics components, it is worth using a guide describing selection by VIN/OEM, HW/SW compatibility, and practical installation examples: Used automotive electronics – a guide to selecting ECU modules and sensors.

Expansion of the intake system in the Volkswagen group

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