Please help me, I have an HDI boxer, it doesn't start

Thank you I thank you for concern about it; I have taken the decision of sending it to Peugeot service.
They have already repaired it and the truth is that I am glad although I have disbelled a lot of money for it, but in short it is very necessary for my work, I thank you for kids thank you.
The matter was the pressure sensor that is placed on the high pressure rail