Warm Air Out Vents, Liquid Line or A/C Condenser Outlet is Abnormally Cool, Frost or Condensation on Receiver/Dryer
Warm air comes out of the vents. The liquid line or the A/C condenser outlet is abnormally cool, or there is frost or condensation on the receiver/dryer
Probable cause: A restriction in the high-pressure side of the system
Recover A/C refrigerant A/C Refrigerant Recovery, then check the liquid line, the receiver/dryer, and the A/C condenser for restrictions. Repair as needed. Recharge the system to specifications A/C System Charging
Also check for
Climate control DTCs Initial Inspection and Diagnostic Overview