My ABS light in a Daewoo Kalos Blue Sport is on?

A few months ago I stalled my car out and when I restarted it the ABS light came on.

I took it and had a diagnostic done and the code came back as the front passenger side sensor was faulty. I have replaced it and the light flickers and then stays on.

When the diagnostic was done it had a reading on the rear tire that said it was in motion when it was stood still.

Can anyone help? The light is still on and it failed it's MOT and I am desperate to get it sorted. Thats the only thing it failed on.