Hi there i drive a skoda octavia on a 98 plate last year i had a problem with my abs

when i start the car it does the checks it normally does and the abs light goes off but when i start driving and go past about 10 mph then the light comes on and stays on untill i stop the car i have no idea why it does this so wounder if any one here may be able to help me

many thanks

Get a code scan done, and check all tyres are the same profile. Sounds like one of the ABS speed sensors is goosed.

at about 12mph, the abs does a moving test, and you can heard it if the radio is off. This was the case on my old glxi 1.6.

my 2k3 dont make a sound.