ABS light

[Brettsky]

Hi all, I am on my third Subi over my 32yrs of driving. Not to say I have only had only three cars.
I have recently purchased a Marone 2001 Subaru Liberty Auto RX sedan, Stock standard with two din radio cassette/CD lol.
When I purchase it I knew i had to replace a drivers side front CV Axel. Today I replace the CV but now the ABS light is on.
My son thought he would help out and take the caliper off whilst i ran down to Masters to buy a 32mm socket $16 ouch, the job took about 45 minutes, in all quite easy.
So all back together now but ABS light stays on, any ideas why please.
Brett