steering twitch

[05 v70r]

I have a 2005 v70R that has a twitch in the steering that occurs intermittently when at neutral throttle. It can be a single twitch or as much as a stutter and always to the right. I pulled the ABS fuse and turned off traction control without removing the issue. If I accelerate or decelerate the issue does not occur. Only at neutral throttle. I surmise the issue is vacuum related but nothing in the steering or brake system is vacuum related. I have seen the definition of brake control module issues causing intermittent issues but wouldn't this show up as a fault code? Issue started 2 years ago then went away but now is back. I live in MInnesota and could temps of 15 degrees or lower have re initiated? Bad ABS sensor on right wheel?