Fuel too lean?

It sounds like the fuel pump is defective due to low pressure. When you say the car will not turn on, do you mean the engine will not crank over? (starter), or there are no lights coming on, or the engine cranks over but does not start and run? Please go over this video to help us see what is going on:

https://www.youtube.com/watch?v=lXLJbuAZ4CE&t

This guide will help you see what can cause the elan mixture:

https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers

Can I ask if the exhaust system is leaking when the engine is running? If so, this will be the problem for the lean codes. Can you please shoot a quick video with your phone so I can see the problem? That way I can tell for sure what's going on. You can upload it here with your response. Also, what are the code numbers?

Yep, both of these codes have to do with the fuel pump module so it must be defective. Here is the correct way to change out the fuel pump in case you need it. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.