This forum is great! Thanks for the advice. I had the same issues and codes so I took my 99 RX300 in to a local Toyota Dealership and was informed that it would cost me $1600 to replace the two OCVs and matching camshaft gears. I wondered why the gears and they said that the parts work in tandem and they recommended that I change them out. Well it seemed fishy to me and I went here for more info. Hour of labor and $200 labor and I had replaced my own OCVs and have not had a code since. It runs smoother than i have heard it run in months. By the way, don't buy the OCVs from Lexus as the same exact part is $25 more than if you picked it up at Toyota. (Lexus said that the parts are not interchangeable...can't believe anyone these days!)
Thanks everyone!
Michael
Saint Augustine, FL
