What Are the Common Faults of the Intake Pressure Sensor?

[DelMax]

Common faults of the automobile intake pressure sensor include: 1. Short circuit or open circuit inside the sensor; 2. The output signal of the sensor does not change with the variation of intake manifold vacuum; 3. The output signal voltage is too high or too low, deviating from the normal range. Below is relevant information: 1. The intake pressure sensor is used to detect the engine's intake air volume and control the basic fuel injection quantity. It detects the absolute pressure in the intake manifold behind the throttle valve, based on engine speed and load, and converts the changes in manifold absolute pressure into a signal voltage sent to the Engine Control Unit (ECU). The ECU controls the basic fuel injection quantity according to the magnitude of this signal voltage. 2. If this sensor is damaged, the ECU cannot receive the intake air volume, leading to an overly rich or lean air-fuel mixture. An overly rich mixture can cause black smoke, incomplete combustion, or even backfiring from the exhaust pipe. A lean mixture can result in insufficient fuel supply.