Renault Laguna problem

Hello friends I have a Renault Laguna 2,000 DCE gasoline of the year 2001 The problem I have is that when I have been on the on time, the aboard computer tells me anomaly in the injection check ESP and when this comes out the car is limited to 2000 turns for a time until the symbol of the engine in the engine in red appears and there is already stopped again and it starts again and more than the minute again when the same thing again. It is going well again. I have put the computer and in EOBD it gives me the failure P 0170 regulation of the injection. The pump apparently pulls a good gasoline pipe to see if you can make me a hand. Thank you very much.