What are the symptoms of a faulty fuel pressure sensor?
1 Answers
Fuel pressure sensor is used to detect the changes in fuel pressure in the fuel pipeline. If it is damaged, it cannot detect the fuel pressure, and the engine computer cannot adjust the fuel pressure according to the working conditions. Therefore, the car may experience symptoms such as weak acceleration or failure to start. More information about the fuel pressure sensor is as follows: 1. Function of low-pressure fuel pressure sensor: The engine control unit uses the sensor signal to control the low-pressure fuel system. The engine control unit sends a signal to the fuel pump control unit according to the sensor signal, allowing it to adjust the electronic fuel pump as needed based on the sensor signal. Impact of sensor signal failure: If the fuel pressure sensor fails, the fuel pressure pre-regulation replaces the fuel pressure regulation. The fuel pressure is about 6.5 bar. 2. Function of high-pressure fuel pressure sensor: The engine control unit analyzes the sensor signal and adjusts the pressure in the fuel distributor pipeline through two fuel metering valves. Impact of sensor signal failure: If the fuel pressure sensor fails, high fuel pressure cannot be established. The engine operates in low-pressure fuel emergency mode, resulting in loss of power and torque.
