- Low refrigerant level: If the refrigerant level is too low, the system won't be able to circulate enough coolant to cool both sides of the vehicle evenly.
- Faulty blend door: The blend door is responsible for regulating the flow of air between the heater core and the evaporator coil. If the blend door is stuck, it can prevent air from flowing to the driver's side of the vehicle.
- Defective evaporator core: The evaporator core is responsible for cooling the air that flows through the ventilation system. If the evaporator core is damaged or clogged, it won't be able to cool the air properly.
- Faulty expansion valve: The expansion valve regulates the flow of refrigerant into the evaporator core. If the expansion valve is defective, it can prevent refrigerant from flowing to the evaporator core, which will result in insufficient cooling.
- Air blockage: Make sure the vents and ducts are clear of any debris that could block the airflow. Check for any obstructions in the vents, such as leaves or dust, which can prevent the cool air from reaching the driver's side.
