Lexus Troubleshooting Questions? Ask a Lexus Expert
Was that code current before the check engine light? If not, it sounds like it is out of time. These things are pretty picky on being dead on the timing marks.
Do you have a diagram of the timing marks and where they are?
There is not special way to put the Vanos, or VVT gears on the camshafts. The only thing to make sure of is to line up the pin on the camshaft, to the gear and then tq. down the bolt.
Turn the crank pulley to TDC, and the notches on the camgear should line up to the notch on the black cover. just like the picture shown. It is easy for these things to get off a tooth when lining up the belt. Double check that and I bet thats your issue. If not, please let me know.
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Well, if the marks are dead on, with the scan tool you will need to go in and active test the camshaft gear and see if the timing adjust. If not, you have a bad gear, or oil control valve, but since this only happened after the install, I would assume the gear is the issue.