Yaris Steering Problem! Need help!!

[JSCIII]

Hello Folks!

It's been a while since I write here, I've been having some major issues with my '08 2 door Hatchback, I love the car and everything but pretty much. I feel like crushing it right now.

The car started pulling to the left on his own on Monday randomly, no bumps or any particular situation with it. I thought it needed an alignment but upon putting it on jacks, I found that the steering wheel is pulling to the left on its own and I can hear the EPS engine on in the back of my dashboard.

Weird thing is, there's no P/S light on or any codes, got the car to a Toyota dealer and upon plugging it on to the scanner, it stopped turning left, no actions taken by the mechanic, just plugged the car into the scanner.

A few miles later, same thing again, wheel turns left on its own, anyone has had this problem ever?? I'm desperate and really bummed, I bought this beautiful car after a car wreck with my old corolla '98 and thought this was going to be much better but turns out it didn't. Thank you folks for your help and comments in advanced!!