Hello, I have a Peugeot 307 hdi 110km, for some time, when pressing the gas harder, i.e. when overtaking faster or in short, I want to give him a garbage, a depollution system faulty message pops up, the car loses its power immediately, this indicator lights up for a few days and it goes off by itself, of course, when I drive quite calmly, recently I also had a case that I went on the route and while driving at 140 km / h, about 100 km, this message popped up again and the indicator light was on again for a few days, Please help me what it may be because I have no idea, thank you very much in advance.