In 307, syst gives defillant error with antipol

On the road, he suddenly gave this error, then the engine fault light came on and is still on. Then it started to cut off the gas. When we opened the hood and looked at it, we saw that the engine water we filled 2 weeks ago was less than 1 liter, the problem continues for 2 days, I would be very glad if you could guide me. (By the way, especially when the engine strains. -When driving and speeding- gives this warning.

It may be leaking from the radiator hoses. While the vehicle is empty, let one of you load up on the gas, let someone watch the hoses of the engine.If the hose breaks, when you give the engine bottom gas, it leaks from the crack, first observe it.

I have 1.4 hdi 307 for 6 years, I have not been able to find a solution to this problem, though I do not mind it very much, when I load it, when it reaches 4 thousand cycles, I give the same error and the engine lamp turns on and the vehicle stops and I start it again the next day, the lamp turns off, but whenever I go to 4 thousand cycles I experience this event, if there is a solution I have to solve I want