Alright so my EPS went out today and my light is on.

Before it would occasionally not turn on when I would start the car, but I would be able to shut her off and start her again and the problem would be fixed.

Now it won't come back on at all.

Pulled the codes and got:
Code 3 - LOW (Motor drive transistor) stuck on
Code 23 - Problem in the engine speed signal circuit
Code 35 - problem with the sub microcomputer

I'm lost on where to start to diagnose this. Any help would be appreciated.

 

I'd start by swapping in a known good EPS module (just to the side of your battery)