I have a 2007 Is250awd that has the dreaded check VSC, Pull codes and I get C1234. Yolk raw rate or something along those lines. I didn't see anything dealing with this particular issue when I searched. Car looks like it need rear break pads could this be causing the code somehow?

 

According to the code it means Right Front Wheel Speed Sensor Input Signal Missing
https://www.engine-codes.com/C1234.html

 

Or try to reset and it might not come back. Chances are high that it will not. Did you actually just had an emission test?