Thanks. What I'm thinking though, I really don't think the cam sensor should be an issue, its located at the back of the head near the firewall away from possible damage. It was only removed once when I rebuilt the engine. I know it could fail. but it seems unlikely to me. If it is sending a signaI to the ECU to turn on 1349, that sounds like it works. I suppose since I replaced most everything else I could replace this too. Is there a test method to determine failure?
I'm leaning towards the Controller assembly. After reading and investigating the message boards last night, it looks like this trouble code causes a lot of problems for owners and techs alike. It took a 3rd tech to confirm there was a filter//screen behind the OCV after 2 told me there wasn't. Both local Lexus dealers usually have to special order a large percentage of parts that I need, but both had this part sitting on the shelf. Kinda leads me to believe this controller assembly is the root of all evil in regards XXXXX XXXXX VVT system.
As I said , I'm just frustated as the car runs perfectly, has great power and acceleration, doesn't misfire, and PASSES the actual emissions test, but fails because of the MIL light being on.
Also, what direction does oil travel to the VVT system. There is an oil pipe the runs to the OCV housing assembly. Does it not travel through the head and cam to the OCV, or does it travel from the base of the block up the the OCV? There are two bolts at each end of the pipe and the upper one has a check valve in it. If I mistakenly had them switched positions, that would create a possible oil restriction? I'm sure they are in the correct position, but I don't want to miss anything.