What does it mean?
The diesel fuel system contains a low-pressure and high pressure side. The low pressure side consists of the tank, pump, filters, water separator, bleeder valves and necessary fuel lines. The high pressure side varies according to injection type, but typically consists of a high pressure pump and fuel rail. A typical common rail diesel fuel system The fuel volume control valve (FVCV) is found on high pressure pump on most modern common rail diesel engines.
It regulates the volume of fuel from the internal transfer pump to the high pressure pumping components. The valve adjusts the low pressure side of the system to meet the demands of the engine. The FVCV is a duty cycle controlled solenoid controlled by the PCM. One side of the solenoid receives battery power, and the other is intermittently grounded by the PCM. The combination of the FVCV and the fuel pressure control valve (FPCV) is used to correctly supply fuel to the engine.
The fuel pressure sensor monitors FVCV and FPCV operation and informs the powertrain control module (PCM) of any changes. A typical fuel volume control valve and high pressure pump The code P0002 stands for fuel volume regulator control circuit. The PCM monitors the state of the FVCV circuit and sets this code when it finds a range / performance problem.
Note: A range/Performance related code will be set when either a sensor or other component does not perform within the range the PCM (Powertrain Control Module) expects to see, given the current engine load/speed, and information gathered from other sensors.
The possible causes of Range/Performance codes are likely to be defective sensors as easily as they are likely to be the result of wiring issues that affect the operation of the affected sensor or component, which means that with these codes, it is important to regard all sensors and components as part of the control circuit the code refers to.