New member I need help

Hi my names Bryan I’m new to owning a Toyota tundra. It’s a 2012 tundra crew max 4x4 I bought from my uncle I love the truck it been great but I’ve have problems with lean codes I already replaced the secondary air injection valves and new intake gasket and new upstream o2 sensors idk what it is but it say bank 1 & 2 system too lean. Please help I don’t want to mess up my new truck. The upstream o2 sensors are denso brand too

 

Idk what this is but it’s pumping while the engines running and I’ve never noticed it doing that before.

 

Welcome from NY.

Post that question here, you have a better chance getting help since not too many members check the introduction posts.

https://www.tundras.com/forums/2-5-gen-tundras-2014-2021.27/

 

Welcome from LA (Lower Alabama)!