Low side for air condition

Question edited for clarity and correct order 'make model 'stuff'.
Question moved to model category.

Passenger side and after the catalytic converter.

https://www.justanswer.com/car/7vwre-getting-code-p0031-2002-suzuki-xl-7-2-7l.html

Oxygen Sensor locations - 2003 Suzuki XL-7

RepairPal.com https://repairpal.com > ... > Suzuki > XL-7 > 2003
Feb 12, 2010 - Driver's side of the engine is bank 1, so passenger side is bank 2, sensor one is engine side of cat converter. Sign in to reply.

where is the low and high side o2 sensor located
Jun 19, 2010
Where is located the knock sensor bank 2 on a 07 Suzuki XL-7
Jun 20, 2018
More results from repairpal.com

..

That is the valve cap for the air conditioning system. The reason it has an H on it is because that represents the HIGH side for your condenser and evaporator. You also have a cap with a L on it, that represents your LOW side for the system. When you get the unit recharged they use the put new freon in on the HIGH side, and evacuate from the LOW side.

if high pressure is good and low pressure is low look for restiction on low side
should show up has frosted area (frozen) ristricting the flow of freon
common cause orrifice tube/expansion valve reciver drier accumulator
too much oil added to system

The refill gauge fitting will only fit the low side. If you have valves on both the high and low side pipes, they should be different sizes and the one you can connect to will be the proper one for recharging the system.

The low side freon port is always located between the compressor and the accumulator. The low side port also has a blue/light blue colored cap. The HIGH side will always have a red cap.

Go to your local auto parts purchase a a/c charge kit for about $69.00, find the low pressure(suction) fill port, there are two ports in every a/c system one is a low pressure side used primarily to fill a system with freon 123a or the like and it is the larger valve mounted on the line, then there is the dangerous high side valve, this is a smaller diameter valve mounted to a smaller diamet a/c line, this is under extreme pressure so donot attempt to fill this high side with freon as it can backfire on you and cause injury.
The low side fill kit will not fit on the high side port so thank godness for that.
start the vehicle put the a/c on full cold high blow fan speed, start filling the low side with a can of 123a freon+oil additive, which equals one pound of freon and check the inside a/c vents, getting cold? If its perfect then you are done, the system may have a very small slow leak and if it only takes a one pound can to fill it once or twice a year you are ok, if it takes more you may want to add a second pound can of freon 134a containing a dye additive that will work its way into the system and show you where the leaks are by exposing a color once it hits the air coming out of the systems defective seals etc.,also they sell a sealer + freon one pound can that can be used to try to fix the leak without having to get too expensive on the repairs.
A car's air conditioning system only hold like 2 3/4 pounds of freon, so in the event you happen to over fill the system a high pressure blow valve usually mounted on the a/c compressor will purge off the excess, but let me warn you they blow off without any warning and can startle you. Always think safety first, wear protective equipment. Work Smart, Work Safe.
Happy Motoring!!!

Probably air-flow meter trouble. Take them out and gently clean them with cotton bud's and petrol. Cleaning may not be enough one may be faulty and need replacing.

You may have created an over charged condition and at this point the a/c compressor will cut off on high head pressures. This can be verified by installing gauges to the systems high and low side service taps and reading the pressures.An overcharged system will start the compressor briefly but soon cuts off once pressure goes to 350 - 400 lbs on the high side. Acceptable pressures for this system should be no greater than 250 high and low suction should drop to 40-50 psi.You might recover the charge and evacuate the system,then try bringing the charge back to proper level.A sight glass in the reciever drier really helps determining proper fill.Once all bubbles have dissipated from the sight glass during charging ,one should stop at that point to avoid overfilling.Too much freon is worse than a low charge especially in hot ambient conditions....

Can you please tell me what size engine is in your car?

It uses R134 and you can purchase cans that already come with a hose attached to it. You put the freon in through the low side port with the engine running and the A/C on.