LG Washer Error Code E-0b

E-0b means the cooling fan motor has failed or is not running, causing the main PCB temperature to exceed 90 degrees Celsius. The washer triggers this fault to prevent the control board from sustaining heat damage. The error points specifically to the cooling fan motor or the drive circuit that powers it on the control board.

No, you should not continue running the washer while E-0b is active. The error indicates the control board is operating above a safe temperature threshold, and continued use without a functioning cooling fan risks permanent damage to the PCB and potentially other electronics. Stop using the machine until the cooling fan issue is diagnosed and corrected.

Repair costs depend on what component has failed. Replacing a cooling fan motor typically falls in the range of $60 to $150 for parts and labor combined. If the main PCB requires replacement due to a failed motor drive circuit, costs can range from $150 to $350 or more depending on the model and whether the repair is done by a professional. Clearing an obstruction or improving ventilation involves no parts cost.

Some causes, like clearing a physical obstruction from the fan blades or improving ventilation around the machine, can be handled without specialized tools. However, testing the fan motor, inspecting the motor drive circuit, and checking wiring harness continuity require comfort with disassembly and basic electrical testing. Replacing the PCB or fan motor involves working with internal components and is best approached carefully or by a qualified technician.

A power reset may temporarily clear the displayed error code, but it will not resolve the underlying cause. If the cooling fan motor is not functioning or the motor drive circuit is faulty, the PCB will overheat again during the next cycle and the fault will return. A reset should only be used after the actual problem has been identified and repaired.