What are the main symptoms of a faulty car intake pressure sensor?

[HoldenDella]

Main symptoms of a faulty car intake pressure sensor: 1. Open or short circuit inside the sensor; 2. The output signal of the sensor cannot change with the variation of intake manifold vacuum; 3. The output signal voltage of the sensor is too large or too small, deviating from the normal range. Open or short circuit in the connection lines between the intake manifold pressure sensor and the computer can also cause abnormal output signals. The intake pressure sensor, abbreviated as MAP, is connected to the intake manifold via a vacuum tube. It senses the vacuum changes in the intake manifold according to different engine speeds and loads, then converts the changes in internal resistance into voltage signals for the ECU to adjust fuel injection quantity and ignition timing angle.