Codes P014F/P014E, Oxygen sensor?

So this can be because you have an exhaust leak, vacuum leak or one of the fuel injectors is leaking, how does the engine seem to run? If okay let's replace the oxygen sensor and then clear the codes.

P014F - O2 Sensor Delayed Response - Rich to Lean (Bank 2, Sensor 1)

P014E - O2 Sensor Delayed Response - Lean to Rich (Bank 2, Sensor 1)

Here is the location of the sensor. Check out the images (below). Please let us know what happens.

For a vacuum leak the best way is using a smoke machine. But you can use car b cleaner when the engine is cold, which works as well. please go over this guide:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

For the fuel injector test you can remove the injectors for testing, this guide can help with that as well

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

As for the exhaust leak you will need to do an inspection while the engine is running to see if you can locate the noise origin. Please upload pictures or videos in your response of any problems so we can see what to help you with.