BMW x6 engine power drops abnormally?

The possible reasons for the abnormal power drop of BMW x6 engine are: 1, fault code 2c 84- low air pressure in front of throttle valve, and incorrect signal from boost pressure sensor; 2.2C58—— pressurization control is closed and pressurization is cancelled; 3.2775—— The air flow of this model is too low, and the signal of the air flowmeter is wrong. 4. It may also be caused by the intermittent failure of the dirty water temperature sensor of the throttle and the intermittent failure of the gasoline pump. Extended data:

1, the turbocharger and the accelerator pedal form a closed-loop control system, and the boosting pressure varies with the position of the accelerator pedal. Due to the data error of boost pressure, the system can not be closed-loop controlled. In this state, in order to ensure driving safety, the engine control unit actively cancels the power-assisted function, so the vehicle power drops and the acceleration is weak. 2. When data errors are found in fault diagnosis, we should try to find the source of the errors to avoid misjudgment. Especially when replacing valuable parts, we should check them carefully.