*A manifold pressure sensor, also known as a MAP (Manifold Absolute Pressure) sensor, is a device used in automotive engines to measure the air pressure inside the intake manifold. It is an important component of the engine management system as it provides the engine control unit (ECU) with crucial information about the engine load.The manifold pressure sensor typically consists of a diaphragm and a strain gauge or a piezoelectric element. When there is a change in the pressure inside the intake manifold, it causes corresponding change in the position or the electrical properties of the sensing element. This change is then converted into an electrical signal that is sent to the ECU.The ECU uses the manifold pressure sensor data along with other sensor inputs, such as the throttle position sensor and the engine speed sensor, to calculate the air/fuel mixture and optimize the ignition timing for efficient engine operation. The manifold pressure sensor helps the ECU determine the engine load, so it can adjust the fuel injection and ignition timing accordingly. A malfunctioning or failed manifold pressure sensor can cause various issues in the engine's performance, such as decreased power, poor fuel economy, rough idle, or difficulty starting the engine. Therefore, it is important to regularly inspect and maintain the manifold pressure sensor to ensure proper engine operation.If you suspect a problem with your manifold pressure sensor, it is recommended to consult a qualified mechanic or technician who can diagnose and fix any issues with your vehicle's engine management system.* Warranty: 1.Your warranty period begins on the date of purchase. We offer a one-year parts replacement warranty. 2.Not covered by the Limited Warranty Accident or Collision. Improper use, installation, maintenance or service.