How to fix the ABS system on an Audi 80?

I have a 2002 Audi 80 and recently the ABS warning light came on. I noticed a decrease in braking performance and want to get it fixed. Does anyone have experience with this issue and what steps should I take to fix it?

Firstly, make sure to check all the wires and connections of the ABS sensors to ensure they are not loose or damaged. Secondly, check the ABS fuse and replace if necessary. If the issue persists, it could be a faulty ABS control module and I recommend taking it to a certified mechanic for proper diagnosis and repair.