deppolution system defective

Get the code read and reset, at a local parts store or shop most will do it for free (Don't go to a dealership they will most likely charge you)... Then post back with what code (and code description if it's available) is being thrown.

after you had your depolution toped up they should of reset the computer,whats happening now is that the computer still thinks theres no fluid in the system,so in effect its not putting fluid into your fuel ,take it back to them ,it all comes with the price of that bit of service ,,let me know good luck

GO TO AUTO ZONE OR HAVE SOME ONE CLEAR CODES OUT OR DISCONNECT THE BATTERY FOR 3 MINS THAT MIGHT CLEAR CODES OUT

This is a fairly common problem with the Peugeot diesels, usually caused by a faulty level sensor within the depollution fluid reservoir. Unfortunately an expensive repair as the reservoir will need to be replaced.