I had a fault with my ABS light staying on all the time.

had a mechanic check it and he said the error was coming back from an ABS sensor.

I removed both front ABS sensors and metal sleeves in the front of my car from behind the wheels
gave them both a clean and cleaned out the hole then applied some copper greese and refitted them.

and after driving the car about 4FT the abs sensors have reset and dash light went out.

happy days

and an easy job for the diy'ers