The following are some of the reasons why the refrigerant level may be low:
- A leak in the air conditioning system
- A faulty compressor
- A malfunctioning expansion valve
- Incorrect charging of the air conditioning system
If the AC refrigerant level indicator is in the red, it is important to have the air conditioning system inspected and repaired by a qualified technician. Driving with a low refrigerant level can damage the air conditioning compressor and other components of the air conditioning system.