Honda CRV 2002 air conditioning not cold and was just charged,

Does your mother in law sit on the passenger side ?

Please go through my blogs. Aircon Servicing.

There is a fuse panel under the hood,,on the right side.. behind the battery.. under the black lid.. be careful ..Honda CRV is NOTORIOUS for bad A/C SYSTEMS!!!
If you need work,, get SEVERAL OPINIONS!!

muffler explosion
#1 reason , EFI running rich as a pig (CEL glowing and warning)
and exhaust cracks, (adds air )
air + fuel = muffler explosion and can blow the whole thing to H3LL
pipes blast off. car.

open the hood and check for leak on any plastic vacuum lines.

try charging your ac system

Probably a low charge but could be the expansion valve.

Usually it just needs a recharge of refrigerant. The coolant leak question was vague. Check your brake fluid and see if if needs to be filled. The brake light sensor is on the brake fluid reservoir. It comes on when it needs replenishment.

Hi!

Can you specify if you are referring to the engine intake air filter or the cabin air filter?
If you are referencing the cabin air filter, the attached youtube video should help.

I originally created the video for the Odyssey, but found out after looking at my dad's CRV that it is essentially the same procedure as the Odyssey, and have also noticed that the same stands true for most Honda vehicles built between 2005 and 2009.

Happy motoring!

i think your charge has leaked out.  And the high pressure switch isn't allowing the compressor to turn on.