I have a 2007 Lexus ES350 and the other day my car would not start with the check engine light on and check VSC. The check engine came back with codes P0390, P0365, and P0345. After checking these codes, I'm assuming I have to replace the camshaft sensors. Where is the camshaft position sensor A (Bank 2), Camshaft sensor B (Bank 1), and exhaust camshaft sensor (Bank 2)? I was hoping I could do it myself instead of taking it into a shop.

 

I've not heard of both (especially intake and exhaust on bank 1) or even 3 camshaft sensors all going bad at the same time, you may want to check if there's a common wiring harness that's maybe been chewed along the way.
From this video they look fairly straightforward , bank 1 is easier to replace than bank 2, not sure about the exhaust sensors.

 

Okay.....Thank you