Bosch 0261230191 Pressure Sensor

Bosch 0261230191 Pressure Sensor

The Bosch 0261230191 is a high‑performance intake manifold pressure sensor, also known as a boost pressure sensor. It is engineered to deliver precise measurement of the air pressure within an engine’s intake system, enabling optimal fuel injection and ignition timing. This sensor plays a critical role in maintaining engine efficiency, reducing emissions, and ensuring reliable performance across a wide range of operating conditions.

Key Functional Characteristics

• Measurement Range: Designed to accurately sense pressures from atmospheric levels up to the maximum boost pressure generated by turbocharged or supercharged engines.
• Signal Output: Provides a linear voltage output proportional to the measured pressure, typically ranging from 0.5 V (atmospheric) to 4.5 V (maximum boost).
• Operating Temperature: Maintains functionality within an automotive engine bay temperature range of –40 °C to +125 °C.
• Electrical Interface: Equipped with a standard 3‑pin connector, compatible with Bosch’s OEM wiring harnesses and most aftermarket diagnostic tools.
• Durability: Constructed from high‑grade ceramic and metal components to resist corrosion, vibration, and thermal cycling.

Applications Across Mercedes-Benz Models

The sensor is widely used in numerous Mercedes-Benz vehicles, including but not limited to:

• C‑Class (W203, W204) – turbocharged petrol and diesel variants.
• E‑Class (W211) – high‑performance engines requiring precise boost control.
• S‑Class (W220, W221) – luxury models with advanced engine management systems.
• Sprinter & Vito (B906, B903) – commercial vehicles equipped with turbocharged diesel engines.
• Smart Fortwo – compact urban cars that rely on accurate manifold pressure for efficient combustion.

In each of these applications, the sensor ensures that the engine control unit (ECU) receives reliable data to adjust fuel delivery and ignition timing, thereby optimizing performance and minimizing emissions.

Installation & Compatibility

• The sensor is a direct replacement for OEM Bosch models such as A0061539828, A0061531428, and 0261230141.
• It fits the same mounting bracket and connector layout, allowing for a straightforward swap without modification.
• Installation typically involves removing the old sensor, cleaning the mounting surface, aligning the new unit, and securing it with the supplied clamp or torque specification.
• After installation, a diagnostic scan can confirm proper operation by checking the voltage output against expected values for given engine speeds and loads.

Performance Benefits

Choosing the Bosch 0261230191 delivers several tangible advantages:

• Enhanced Fuel Efficiency: Accurate pressure readings enable the ECU to fine‑tune fuel injection, reducing excess fuel consumption.
• Reduced Emissions: Precise boost control helps maintain optimal combustion ratios, lowering NOx and CO₂ outputs.
• Improved Engine Responsiveness: Real‑time pressure data allows for quicker throttle response and smoother acceleration.
• Long-Term Reliability: Robust construction ensures consistent performance over thousands of operating hours, even under high boost conditions.

Diagnostic Considerations

When troubleshooting engine performance issues related to intake pressure, the following steps are recommended:

1. Use an OBD‑II scanner to read live sensor data and compare it against manufacturer specifications.
2. Inspect the sensor connector for corrosion or loose contacts that could introduce voltage drops.
3. Check the wiring harness for damage, especially near bends or heat sources.
4. If abnormal readings persist, replace the sensor with a new Bosch 0261230191 to rule out internal failure.

Conclusion

The Bosch 0261230191 Pressure Sensor is an essential component for modern turbocharged and supercharged engines. Its precise measurement capabilities, wide compatibility across Mercedes-Benz models, and durable construction make it a reliable choice for both OEM and aftermarket applications. By ensuring accurate intake manifold pressure data, this sensor contributes directly to engine efficiency, performance, and longevity.