307 cc esp problem

hello friend 2.0 177hp cc user is 1 or 2km in my car, esp light turns on and turns off when the ignition is turned off and it turns on when it turns on, it connects to the machine, the brake sensor is malfunctioning.

ESP failure is generally related to the sensor. teacher to disassemble and carry out a control and cleaning

when available, disassemble all of them and clean up my cleaner bidet pp2000

It would be good, teacher, there may be oxidation-non-contact - disconnection in the sockets.