brandonfpv

hey guys, its been a while since I made a post here, as everything has been running fairly well. I still had a check engine light, but not the money or time to repair it. Well, it has caught up to me. p0171 and p1153 are giving me strange problems. I also have an evap code. Anyways, im hearing a weird squeaking noise when I put the vehicle in reverse or drive. Also, I am getting a weird issue where if I press the throttle down all the way, I get less power than If I were to put it at say 90%. I've seen on here before that sometimes o2 sensors can read fuel as being lean, causing it to dump even more fuel. well I brought it to a trusted mechanic, and he says that the bank 1(or 2) sensor 2 (there's only 1 downstream sensor) can cause these issues. I have already purchased a new upstream sensor, but could he be correct?

Attached is the fuel trims when they're out of whack, and when they stabilize (in that order)
https://streamable.com/0q71au
https://streamable.com/g40mu3