Warm Air Out Vents. Liquid Line or Condenser Outlet Abnormally Cool, or Frost Condensation on Receiver/Dryer

Warm air comes out of the vents. The liquid line or the 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 condenser for restrictions. Repair as needed. Recharge the system to specifications A/C System Charging

Also check for

HVAC DTCs Initial Inspection and Diagnostic Overview