Hi, I bought my Prius about 6 months ago at a County auction. The car only had 62k miles. The start battery was the only thing wrong with it. Since then we have put about 23k miles on it. Well the problem is that The triangle came up on the dash and the line threw the car was showing also. Went to AZ and bought a cheap pocket computer and got a code 3120. From what I've read on forums that it's not a good code..(Trans axle). I have about 4k in this car and don't want to keep spending more and more money. Just hard for me to believe that the Trans is bad with 85k miles. Thanks for any input.