A/C not working on one side?

We need to find out what the pressures are on the system because it appears the refrigerant is low. I understand it has been recharged but it may have a leak and is low again. So here is a guide that will help with this:

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Once we know what the pressures are we will know better what the issue could be. Here is a guide that will help with this in more general terms:

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Also, here is an attachment that will show proper pressures based on ambient temperatures. Thanks

Does the heater contol change from floor to defrost or anywhere or any other selector switch? What happens when you turn all the heat on and not the a/c. Check what ducts the heat comes out of and if there is a difference with the amount. Let it run for a minute then shut it off. Then try the a/c check each duct one at a time. You should be able to close one duct at a time. The duct may be stuck.

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Mike