038 906 051E – Boost Pressure Sensor

Description

The 038906051E Boost Pressure Sensor is a genuine Bosch OEM replacement that measures intake manifold absolute pressure and transmits real-time data to the ECU. Also known as a MAP Sensor (Manifold Absolute Pressure Sensor), this 038906051E Boost Pressure Sensor allows the engine management system to calculate the correct air-fuel ratio and regulate boost pressure precisely. Consequently, it plays a direct role in combustion efficiency, throttle response, and emissions output.

Bosch is a globally recognized OEM supplier trusted by Volkswagen and Audi for precision sensor technology. Furthermore, this direct plug-and-play replacement meets factory specifications without requiring any modifications. Therefore, installing a genuine Bosch 038906051E Boost Pressure Sensor restores accurate pressure monitoring and reliable engine management performance.

Why the 038906051E Boost Pressure Sensor Matters

The ECU relies on manifold pressure data to determine the correct fuel injection quantity and timing. However, a failing sensor transmits inaccurate pressure readings that disrupt the air-fuel mixture calculation. Consequently, the engine may run too rich or too lean, causing poor combustion and increased emissions.

Furthermore, turbocharged engines depend on accurate boost pressure feedback to regulate the turbocharger’s output. Additionally, incorrect MAP sensor data can cause the ECU to enter a limp or reduced-power mode to protect the engine. Moreover, replacing a faulty 038906051E Boost Pressure Sensor with a genuine Bosch unit restores the precise data the ECU needs to maintain optimal performance.

Signs of Failure

Inspect your vehicle for these common symptoms of a failing MAP sensor:

• Check engine light with boost or MAP-related fault codes stored.

• Rough or unstable idle, particularly at cold start or low RPM.

• Noticeable loss of power or hesitation during acceleration.

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

• Poor fuel economy due to incorrect air-fuel ratio calculations.

• Turbocharger boost pressure that feels inconsistent or unresponsive.

Key Features — 038906051E Boost Pressure Sensor

• OE Part Number: 038 906 051 E

• Manufacturer: Bosch — trusted OEM supplier for VW and Audi

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

• Performance: Restores correct air-fuel ratio, throttle response, and emissions control.

• Fitment: Direct plug-and-play OEM replacement — no modifications required.

• Reliability: Durable Bosch construction engineered for long service life.

Service Notes

Always verify fitment by VIN before ordering. MAP sensors are sensitive electronic components. Furthermore, inspect the intake manifold vacuum port and sensor wiring harness before installation, as vacuum leaks or damaged connectors can cause the same symptoms as a faulty sensor.

Compatibility

Always verify fitment by VIN before ordering. This sensor is commonly found on TDI diesel and turbocharged gasoline engines.

Cross Reference Numbers

• 038 906 051 E

Additional information