This is my first post in these forums but I wanted to share my recent experience with this problem. This post was very helpful to me in solving my problem.
My wifes '98 Camry V6 just failed an emissions test a few weeks ago and four error codes showed up. The codes were P0401, P0402, P1410, P1411. I wasn't about to take it to the dealership and pay a bunch on money for nothing. I did my reasearch on the internet and then I went and got a cheap code reader/eraser from Sears so I could read and clear the codes. I took the advice from kodyw's post and changed the VSV (vacuum solenoid valve) first. This took care of the P0401 and P1411 codes. I then took the next logical step and changed the EGR position sensor instead of the whole valve. Once I did this and cleared the codes one last time the CEL stayed out and the reader showed 0 codes. I just hope it stays this way. Hopefully this info will help someone out in the furture who's experiencing the same problem. In all I spent just over $100 dollars in parts plus the cost of the code reader. It was supposed to be $79 but it was hanging on a hook that said $44, so I got it for the lower price.
