Warm Air From Vents. Suction Line Cool-Warm, Discharge Line Warm-Hot (Without Climate Control)

Warm air comes out of the vents. The suction line is cool to warm, and the discharge line is warm to hot

Diagnostic Procedure:

1. Probable cause: A/C system is low on refrigerant, indicating a possible leak

2. Do the refrigerant leak check, A/C Refrigerant Leak Test and repair any leaks. Recharge the system to specifications A/C System Charging

Also check for:

- HVAC DTCs How to Troubleshoot the Heating and A/C Systems
- Add refrigerant oil depending on the part you replaced Service and Repair