Thank you for all your coments guys. I have a friend who works for mercedes and he put my ls430 on their computer. I was there so i saw what it said on the computer. It said code p1051 o2 sensor bank 1 and 2. So do you guys this Lexus were trying to rip me of with the vsv thing? He reset it for me and said take the car for a 10 min spin, if the eml comes on again, bring it in and ill put it on the computer again just to make sure it is the o2 sensors. So i did that, after around 10 mins the light came on again, again the computer found 2 faults o2 sensors bank 1 and 2.