I just changed the spark plugs on my 2008 IS250 which has 82k miles on it. Now the service engine light for code P2017 is on as well as VSC light and Traction light are both on as well. I own auto repair shops and have done tons of tune ups so the ability to do it is not the problem. We have pulled the intake 3 times since to make sure we wasn't missing anything and we didn't. It is a solid code and wont let me clear it at all, when I try to clear codes the only light that will change is the traction light will go off for a split second and back on again.
And prior to doing the simple plug swap the car has never had the check engine light on. Any suggestions would be appreciated.

 

Since it's a runner issue check this threads out:

https://www.clublexus.com/forums/is-2nd-gen-2006-2013/895578-p2009-possible-solution.html#post10265772

https://www.clublexus.com/forums/is-2nd-gen-2006-2013/894619-intake-manifold-valve-issue.html#post10265832

 

sounds dumb but, is the MAF sensor plugged in all the way? along with accompanying vacuum hoses?
Source: i make bonehead mistakes sometimes.

 

I just changed my plugs too and got the same code. Forgot to reconnect the hidden connector under the rear of the intake. All the experience in the world, you are still human, like me.

 

I did the same thing once before when changing spark plugs. Forgot a small hose in the back.