The diagnosis trouble code P0002 has various meanings and the meaning is based on the constructer of the cars and models. To know the meaning of the code, it is essential to know the model and manufacturer. When you get the P0002 Code, it is necessary to check the main thing to verify the operation of the VCT solenoid. Vehicle Speed Sensor Out of Self-Test Range shows the VSS input signal is out of Self-Test range. The P0002 OBD-II Trouble Code means Fuel Volume Regulator Control Circuit Range or Performance. To understand detail of the code and solve the problem, you need to use manual of the car.