First, check the wire harness closely, make sure that the harness is not rubbing against anything. You could also try swapping the valves for one side to the other, if you get a P1349 (code for the left bank).
Unfortunately, OCV's for right and left banks are not interchangeable.
99es300 Tech Help... P1354 Code Ocv Issue?
in 92 - 06 Lexus ES250/300/330
Posted
Unfortunately, OCV's for right and left banks are not interchangeable.