how do you replace camshaft sensor bank 1? 2008 hyundai entourage 3.8L

What is your question?

diagnostic reading of code P0021. Oil light kicks on. Then check engine light, a short time after. changed oil and oil filter. still getting same code, and same problem of check engine and oil light.checked camshaft sensor bank 2 cleaned sludge off,easy to get to. Is there an easier way to get to the camshaft sensor bank 1 to check it?

How long has your 2008 Hyundai Entourage had this problem?

a few days