You, but it is half the machine check

1. check the pressure regulator that is not locked.... where and how you can? check?
2. the pressure sensor gives correct readings..... how to check?
3. make sure that the filters are clean and that the power supply and the back are not blocked...... here I could replace the filter and make sure I do not know in any way the pipes
4. verify that there is enough fuel..... well here it is, even with the full.
I had the idea that this error is because? in view of the high demand of diesel fuel in any given situation is that the feed pump is not able to provide input to the pump of the rail that particular pressure. In the corner? words that cannot stand behind the demand of diesel high-pressure pump.
Let's say that if the problem occurred with the original machine this lack of power may be derived exactly from the filter or ducts clogged or just diesel and cold temperatures.
Pu? be cos?? I seemed to have read once that on the jtd 105 modifying a valve that was on the diesel fuel filter by putting one with higher pressure so the food better, the pump of the rail... of course with maps thrusts.