Warm Air Out Vents. The Suction Line Is Cool to Warm, and the Discharge Line Is Warm to Hot

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: The A/C system is low on refrigerant, indicating a possible leak

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

Also check for:

- Climate control DTCs Initial Inspection and Diagnostic Overview
- Add refrigerant oil depending on the part you replaced Service and Repair