When was the last time you did a complete brake fluid change? Brake fluid absorbs moisture from the air and that can cause all kinds of strange braking problems. Of course, the power steering pump and brake booster have their own part to play along with the ABS system. If no codes, you need some hands-on to figure it out.

 

Since this has been going on since the wheel bearing change, I am suspect to it's performance in creating the situation. Does each wheel have the same amount of drag when spun by hand? It isn't impossible to get a bad part.

 

The rubber brake lines have a habit of collapsing inside. Won't allow fluid to leave caliper once you let off the brake pedal. That would be my first try; replace the rubber brake lines on both sides.

 

Try doing the brake bleed procedure with a scan tool

 

Did you clean and use silicone grease on the caliper slide pins? What does the pad slide area look like? Might need to do a little cleanup. Also check that the rubber caliper bolt bellows are in good shape.

And have the ABS pump checked. Might have trash in one of the lines.

 

It sounds like junk trapped in the brake line. So it has uneven pressures.

 

Which way does it pull? It will pull in the opposite direction of the bad caliper. On a road that no one travels on, get a piece of cardboard and clamp off the right side brake hose, go about 5/10 miles an hour. step on the brake and see if it pulls. Do the same thing on the other side and see what happens.