1. Faulty Blower Motor Resistor: The blower motor resistor regulates the speed of the fan motor. If it fails, it can cause the fan to run at a high speed continuously.
2. Faulty Fan Switch: The fan switch is responsible for turning the fan motor on and off. If it fails, it can cause the fan to remain on even when the switch is turned off.
3. Faulty Wiring: Damaged or shorted wiring can cause the fan motor to receive power even when it is not supposed to.
4. Faulty HVAC Control Module: The HVAC control module is responsible for controlling the various functions of the heating and air conditioning system, including the fan motor. If it fails, it can cause the fan motor to malfunction.
To resolve this issue, it is recommended to have your vehicle inspected by a qualified mechanic to identify the exact cause of the problem and have the necessary repairs performed.
