Where is the low pressure switch on 2002 l200

General info

https://anewwayforward.org/ac-low-pressure-switch-location/

Under the air filter box

https://www.google.com/search?q=2002+buick+century+low+pressure+ac+switch+location

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notify shops in your area pricing is different everywhere fixya doesnt do estimates --

There is a high and low side pressure switch that disconnects the power to the compressor clutch if the refrigerant charge is too high or too low.

Replace indicator bulb in dash

code p 0107 refers to manifold absolute pressure (MAP) sensor/ barometric pressure (BARO) sensor--low input===causes wiring short to ground---map sensor--baro sensor---ECM
code p 0122 refers to
(1)throttle position(TP) sensor A/ pedal position (APP) sensor A --low input ===causes ---wiring short to ground --TP/APP sensor/s---ECM
(2)TP switch and APP switch A--low input===causes -same as (1)
(3) TP sensor B/accelerator pedal position switch B---circuit malfunction====causes --wiring open/short to ground/short to positive--TP/APP switch--- ECM

most likely you are low on freon and the pressure switch will not allow the compressor clutch to engage. one way to tell if that is what is happening is to find the pressure switch located on the low pressure side of the system. you can tell witch line is the low pressure side because it is larger in diameter than the high side.Then take a wire and jump the two wires that go to the switch together.If the compressor starts to run then charge the system with freon.If it does not run then check the relay.

if the system is charged, it could be a faulty low pressure switch

A low oil level will cause this. If the oil level is fine, then you need to have a mechanical gauge to verify the pressure is really low and that you don't have a bad oil pressure switch. You could try replacing the switch first if you don't want to put an oil pressure gauge in the vehicle. If the pressure is indeed low and the oil level is normal then replace the oil filter to see if that brings the pressure back up. If the pressure is still low, remove the oil pan to check the pick-up tube for debris. If it is clear of debris then you'll be needing to replace the oil pump. Another possible cause of low pressure is a damaged rod or main bearing and would require the engine to be rebuilt.

Had the same thing happen on my '02 Saturn L200 a few years ago. The brights would come on every now and then when using the turn signal, but after a while they would stay on and the turn signal/headlight switch handle would flop around. After taking it apart, it turned out the plastic on the inside was broken. The switch was relatively inexpensive (<$50) from the dealership and easy to install for the somewhat mechanically inclined.

yes their is a switch that senses the amount of gas pressure and shuts down system if their is not enough pressure,but playing with a high pressure system like this can seriously maim,so iam advising you to take it to a repair shop with a proper machine to discharge the system and then check for the faults ,but most likely cause is lack of reserve gas in the system and it just wants a re gas