Hi I have a 2001 subaru impreza outback sport 2.2.2L and it's got some issues that I'm trying to fix on my own but I am on social security and I have only Uber eats to make up for that but it does help a little even with gas prices but anyways I have a o2 sensor upstream hanging free just next to the engine and i have these codes from oriellys
any advice on what exactly to do would be great also this is something I really want to get going right and the engine has a lifter tick now when a couple weeks ago it didn't also know it needs from and rear cv axle shafts but The motor is the heart and it a little weak right now but her timing belt was changed 22,000 miles ago and I know that they have that issue but also the middle driveshaft is randomly knocking a bit and idk what it exactly is but I need this car to be reliable and go safe in the winter and she's gonna be mean when I'm done with her once she's fixed I'm gonna lift her put 1 inch wheel spacers a 3 inch lift and run a little bit of my homemade race fuel just for fun but anyways She's my only ride and I need her to be safe reliable and good on gas thanks for reading and any of your guy's help is really appreciated 
