1. Clogged drain tube: The most common cause is a clogged drain tube. The drain tube is responsible for draining the water that condenses on the evaporator coil during the air conditioning process. If the drain tube is clogged, the water can back up and overflow, causing it to leak from under the car.
2. Faulty evaporator core: Another possible cause is a faulty evaporator core. The evaporator core is responsible for absorbing heat from the air inside the car and transferring it to the refrigerant. If the evaporator core is damaged or leaking, it can cause water to leak from under the car.
3. Damaged expansion valve: The expansion valve is responsible for controlling the flow of refrigerant into the evaporator core. If the expansion valve is damaged, it can cause the evaporator core to freeze over, which can lead to water leaking from under the car.
4. Damaged condenser: The condenser is responsible for cooling the refrigerant before it flows back into the compressor. If the condenser is damaged or leaking, it can cause the evaporator core to freeze over, which can lead to water leaking from under the car.
5. Other leaks: In some cases, a leak from another part of the air conditioning system, such as a hose or seal, can cause water to leak from under the car.
If you are experiencing this issue, it is important to have the problem diagnosed and repaired as soon as possible to prevent further damage to the vehicle.
