03C 906 051F – MAP Sensor (Bosch)

Description

The 03C906051F MAP Sensor is an OEM-quality Manifold Absolute Pressure sensor designed to measure intake manifold pressure on compatible Volkswagen and Audi engines. It sends real-time pressure data to the ECU, which uses that information to calculate the correct air-fuel ratio, ignition timing, and boost pressure. Consequently, accurate MAP sensor readings are essential for efficient combustion and reliable engine performance.

This direct-fit replacement restores precise pressure measurement and helps eliminate fault codes caused by a failed or degraded original sensor. Furthermore, its plug-and-play design requires no modifications during installation.

Why the MAP Sensor Matters

The ECU depends on accurate intake pressure data to manage fuel delivery and ignition timing. Therefore, a failing 03C906051F MAP Sensor can disrupt the air-fuel mixture and cause a range of drivability concerns. Without correct pressure readings, the engine cannot compensate properly for changes in load, altitude, or throttle position.

Furthermore, an inaccurate signal may cause the ECU to over-fuel or under-fuel the engine. This leads to poor combustion efficiency, increased emissions, and potential long-term engine wear. Replacing the sensor restores the correct data stream and allows the ECU to resume normal engine management.

Signs of 03C906051F MAP Sensor Failure

Inspect the intake system and sensor connector if you notice any of these common symptoms:

• A check engine light with MAP sensor or boost pressure fault codes.

• Rough or unstable idle that worsens under load.

• Hesitation or loss of power during acceleration.

• Poor fuel economy without another identified cause.

• Engine stalling at idle or during low-speed driving.

• Black smoke from the exhaust indicating a rich fuel mixture.

• Turbo boost pressure that feels inconsistent or reduced.

Key Features of the 03C906051F MAP Sensor

• OE Part Number: 03C 906 051 F

• Function: Measures intake manifold absolute pressure for ECU fuel and timing management.

• Performance: Restores accurate air-fuel ratio, timing, and boost pressure control.

• Fitment: OEM-quality direct replacement requiring no modifications.

• Installation: Plug-and-play design for straightforward sensor replacement.

• Application: Compatible with select Volkswagen and Audi turbocharged engines.

Service Notes

Always verify fitment by VIN before ordering. Before replacing the 03C906051F MAP Sensor, retrieve stored fault codes using a compatible diagnostic tool to confirm the sensor as the source of the fault. Furthermore, inspect the wiring harness and connector for corrosion, damaged pins, or loose terminals.

Compatibility

Always verify fitment by VIN before ordering. Fitment depends on engine code, model year, turbocharger configuration, and original installed part number.

Cross Reference

• 03C 906 051 F

Additional information