What are the fees to exchange, bank, or transfer weeks. We own 2 weeks in Aruba

https://www.youtube.com/watch?v=RBzbNIs6yTQ

First off ,what make ,model an year vehicle ?

You have to realize that vehicle is15 years old and probably worth peanuts. if you repair it then a few weeks later it breaks down again you have probably wasted your money. i feel to repair it you will pay close to a thousand dollars then you don't know if it will pass a safety next year
I would scrap it and get a good one. Just to go to a dealer for a check up will cost over a hundred dollars.

I don't know if you have reset the computer but if not take one battery terminal off for about 5 minutes and that will reset your computer. If you don't have anymore problems it should not come back on.

You steering rack is worn & tight, because you don't change your
power steering fluid every 3 years,your transmission will be next.

Brake fluid every 2 years
PS & Trans every 3 years

Bank 1 is side no 1 cylinder is located on bank to is opposite Sensor 1 before cat sensor 2 after

O2 Sensor codes are usually in the P0130- P016x range.
P0431 is Warm up catalyst efficiency bellow threshold Bank 2
Don't know what you're working with so just figure bank 1 comes off the bank with the number 1 cylinder.

If you're getting a code for a heated oxygen sensor circuit problem, replace the sensor. I don't think I've ever seen a fuse be the problem. Bank 1 is located at the back of the engine compartment, close to the firewall. Sensor 2 is the sensor after the catalytic converter.

You obviously do not know or care about your truck,
as far as OBD2 dash lights being on

When ever you get any diagnostic trouble fault codes
& thus the dash lights,your vehicle has problems

These lights have been on all vehicles for 31 years
Plenty of time to educate yourself

You get the code now & have somehow found out
possible causes,as you would if you went to a trouble chart

So you off to a good start,just a year late

I wouldn't even worry about the injectors,the gas filter is
taking care of them

You could put a pressure gauge on the system, to check
fuel pressure. Should do that every couple years anyway

Your O2 Sensors, the one or two closest to the engine,not the
rear monitors,get replaced every 100,000 miles

The MAF Sensor gets cleaned at least once a year

With a Lean Condition on only one Bank I would look for vacuum leaks
You may have to have the intake manifold smoke tested & check all
vacuum hoses & sources.

Don't rule out a misfire on cyl#1

As far as resolving anything,you didn't say if you have the
ability to do some of your own work
You obviously don't take it to a repair shop,at least not in a year !!