Warm Air From Vents, Suction Line Is Cool to Warm, Discharge Line Is Warm To Hot (With A/C)

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 Check (With A/C) and repair any leaks. Recharge the system to specifications A/C System Charging (With A/C)

Also check for:

- HVAC DTCs How To Troubleshoot The Heating and A/C Systems (With A/C)
- Add refrigerant oil depending on the part you replaced A/C Refrigerant Oil Replacement (With A/C)