I have codes P1071 and P1074 it says lean on bank1 and bank2

You need a DPFE or MAF. Check to make sure you have no vacuum leaks or clean the MAF but usually either of these two components. Good luck.

just to add, low fuel pressure and a bad pcv will also contribute to the failure. Roy

we found that most of the time there will be an unmetered air source (Vacuum leak)