Abs does not hold. Abs and esp light

hello my name is Yusuf 407 1.6hdi I have the car and abs was holding at the beginning. There was no problem. Absent and esp light came on in rainy weather. When the vehicle stopped, the light did not come on when it was restarted. After a while the light did not come on at all. But what is the reason why it does not hold abs right now? I couldn't understand thank you to everyone who is already interested 407c of 2019-05-21 23:15:33

abs sensor is defective, probably hojam. the sensor needs to be replaced. The reason for the contamination may be in the province.

It came to my mind, but if the sensor malfunctioned, will the abs light not be on continuously?

my teacher indicates that the error falls out at certain intervals. and there may be several reasons for this. oxidation in sensor cable - sockets etc. like.

Let's look at the sensor as soon as possible, the construction is there. Thank you for your suggestions

You're welcome.