Hi to every one, new member with a problem

Last week I fitted new anti roll bar bushes to the front of the car.
I did this without disconnecting any electrical items on the subframe, was a bit of a job to do ARB bushes.
But all finished now and the ride is noise free.

Problem is the ABS light is on and will not go off.

I disconnected the end of the steering column (just a bolt) and moved the front seat to its rear position.

I have checked the wiring to the front seat took the plug out and cleaned the connections with contact cleaner
Disconnected the battery and charged it up, and allowed the modules to discharge by connecting battery terminals together

Has this happened to anyone else or does any one have any ideas to help me out please. I don't have an airbag reset tool just the usual code reader. no codes showing

Thanks for reading