What are the reasons for the failure of the fuel pressure sensor function in the Volkswagen Magotan?

[DiEmilia]

Volkswagen Magotan fuel pressure sensor function failure reasons are as follows: Alarm line poor contact: For the Volkswagen fuel pressure sensor function failure, first check whether the alarm line connection is poorly contacted or has interference. Sensor failure: Check the high and low fuel pressure at idle. Possible causes include intake pipe throttle position sensor and its circuit failure, vacuum line leakage, or engine control unit damage. It is recommended to visit a professional repair shop for diagnosis and repair. Fuel pressure sensor malfunction: If the low-pressure fuel pressure sensor fails, the fuel pressure pre-adjustment will replace the fuel pressure regulation. The fuel pressure will be approximately 6.5 bar. If the low oil pressure is insufficient for a long time, it may cause abnormal wear of the fuel pressure regulating valve, leading to sticking and ultimately resulting in the failure of the fuel pressure sensor function.