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What is the working voltage of the X-Trail fuel pressure sensor?

1 Answers

StMichael

07/29/25 6:56pm

The working voltage of the X-Trail fuel pressure sensor is approximately 5 volts. The fuel pressure sensor detects changes in the fuel line pressure. If it is damaged, it cannot detect the fuel pressure, and the engine control unit (ECU) will not be able to adjust the fuel pressure according to operating conditions. This can result in symptoms such as poor acceleration and difficulty starting. If the sensor signal is interrupted, the engine control unit will use a fixed value to control the fuel pressure regulator valve. Function of the low-pressure fuel pressure sensor: The engine control unit uses this signal to control the low-pressure fuel system. Based on the sensor signal, the engine control unit sends a signal to the fuel pump control unit, which then adjusts the electric fuel pump as needed. Function of the high-pressure fuel pressure sensor: The engine control unit analyzes this signal and regulates the pressure in the fuel distributor line through two fuel metering valves.

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