What are the symptoms of a faulty intake pressure sensor?

[VonLydia]

Intake pressure sensor failure symptoms: 1. Open or short circuit in the sensor's internal wiring; 2. The sensor's output signal fails to vary with changes in intake manifold vacuum; 3. The output signal voltage is excessively high or low, deviating from the normal range; 4. Blockage or leakage in the vacuum hose connecting to the intake manifold, or clogged vacuum ports in the intake manifold. The intake pressure sensor, abbreviated as MAP, is connected to the intake manifold via a vacuum hose. It detects vacuum changes within the intake manifold as engine speed and load vary, then converts these changes into voltage signals through internal resistance variations. These signals are used by the ECM to adjust fuel injection volume and ignition timing angle.