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Delphi MAP Sensor PS20149-12B1 - Intake Manifold Pressure Sensor for BMW
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Delphi MAP Sensor PS20149-12B1
The Delphi MAP Sensor PS20149-12B1 is a precision Intake Manifold Pressure (MAP) sensor engineered specifically for BMW vehicles. It delivers accurate pressure readings from the intake manifold, enabling the engine control unit (ECU) to optimize fuel injection, ignition timing, and overall combustion efficiency.
Key Functionalities
- High‑Accuracy Pressure Measurement: Measures manifold absolute pressure with a tolerance of ±1 kPa, ensuring reliable data for the ECU.
- Wide Operating Range: Supports pressures from vacuum (0 kPa) up to +200 kPa, covering both naturally aspirated and turbocharged engines.
- Robust Signal Output: Provides a linear voltage output between 0.5 V (vacuum) and 4.5 V (+200 kPa), compatible with standard BMW ECU input specifications.
- Three‑Pin Design: Simplifies installation: Pin 1 – Ground, Pin 2 – Signal, Pin 3 – Power (+12 V).
- Durable Construction: Encased in a heat‑resistant housing that withstands temperatures up to 150 °C, protecting the sensor from engine bay conditions.
Compatibility and Fitment
The PS20149-12B1 is designed for a wide range of BMW models, including:
- BMW 5 Series (E60/E61)
- BMW X5 (E70)
- BMW 3 Series (E90/E91/E92/E93)
- BMW X3 (E83)
- BMW 7 Series (E65/E66)
- BMW X6 (E71)
It is a direct replacement for the OEM MAP sensor, ensuring seamless integration with existing engine management systems.
Installation Overview
- Disconnect Battery: Safeguard against electrical shorts during installation.
- Remove Old Sensor: Unscrew the mounting bolts and gently detach the sensor from the intake manifold.
- Prepare New Sensor: Apply a thin layer of anti‑seize compound to the threads if recommended by BMW service guidelines.
- Mount PS20149-12B1: Screw the new sensor into place, tightening to manufacturer torque specifications.
- Reconnect Wiring Harness: Plug the three‑pin connector securely into the ECU socket.
- Reboot ECU: Power on the vehicle and allow the engine control unit to recognize the new sensor during its self‑diagnostic cycle.
Performance Benefits
- Improved Fuel Efficiency: Accurate pressure data allows the ECU to fine‑tune fuel delivery, reducing consumption.
- Enhanced Power Delivery: Precise MAP readings help maintain optimal air/fuel ratios across all operating conditions.
- Reduced Emissions: Better combustion control leads to lower exhaust emissions, supporting compliance with environmental regulations.
- Reliability: The sensor’s robust design minimizes failure rates, contributing to overall vehicle reliability.
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | PS20149-12B1 |
| Type | Intake Manifold Pressure (MAP) Sensor |
| Voltage Output Range | 0.5 V – 4.5 V |
| Operating Temperature | -40 °C to +150 °C |
| Signal Type | Analog Voltage |
| Pin Configuration | 3‑pin (Ground, Signal, Power) |
| Pressure Range | 0 kPa to +200 kPa |
| Mounting Type | Threaded |
| Material | High‑temperature plastic housing, ceramic sensor element |
| Dimensions (approx.) | Length: 30 mm; Diameter: 15 mm |
Quality Assurance and Manufacturing Standards
The PS20149-12B1 is manufactured under Delphi’s stringent quality control protocols, which include:
- ISO/TS 16949 certification for automotive parts.
- Comprehensive functional testing at multiple temperature points.
- Long‑term reliability studies simulating extended engine operation.
Maintenance Tips
- Inspect the sensor connector periodically for corrosion or loose contacts.
- Avoid exposing the sensor to excessive oil mist, which can degrade the ceramic element over time.
- If engine performance issues arise, verify MAP sensor operation using a diagnostic scan tool capable of reading live pressure data.
Conclusion
The Delphi MAP Sensor PS20149-12B1 delivers precise intake manifold pressure readings essential for optimal engine performance in BMW vehicles. Its robust construction, wide compatibility range, and adherence to automotive quality standards make it a reliable choice for both professional technicians and knowledgeable owners seeking to maintain or restore their vehicle’s powertrain efficiency.
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| Alternative searches | MAP sensor 5V MAP sensor BMW MAP sensor OEM MAP sensor 0-5V MAP sensor Bosch MAP sensor Denso MAP sensor Valeo MAP sensor Analog MAP sensor Delphi MAP sensor Engine MAP sensor MAP sensor gasket ACDelco MAP sensor Compact MAP sensor Digital MAP sensor Hitachi MAP sensor MAP sensor harness MAP sensor pigtail PS20149 MAP sensor Siemens MAP sensor MAP sensor connector Automotive MAP sensor Motorcraft MAP sensor Aftermarket MAP sensor Continental MAP sensor Intake pressure sensor Replacement MAP sensor MAP sensor retrofit kit Through-hole MAP sensor Manifold pressure sensor Surface mount MAP sensor Delphi PS20149 MAP sensor MAP sensor adapter harness MAP sensor replacement kit Intake manifold pressure sensor Manifold absolute pressure sensor Standard Motor Products MAP sensor |
| Identifiers | |
| Brand |  Delphi is a brand that produces a range of automotive parts and accessories. The company is headquartered in Germany and has a wide range of products that it offers to consumers. Some of the products that Delphi produces include airbags, brakes, and engines. The company has a strong reputation for quality and innovation, and its products are often used in high-end vehicles. |
| ID | 110335020 |
| Dimensions / Weight | |
| Key Features | |
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