Engine Code p2757

#1
Hello,
I have a 2009 Toyota Corolla Sport model. The check engine light came on and the transmission started slipping. I scanned the code and it came back a p2757. Did some research and there is a large list of possible bad components. Some of these being the valve body or shift solenoids. I could not find however a good answer of what my best shot of replacing first was. Seeing how the cheapest valve body I could find was 600 I don't want to spend excessive money to replace components that are not broke. I was wondering if someone could point in the right direction of what to try replacing first. Thanks for the help in advance.
 
Top