Samsung Washer Error Code AE4

AE4 on a Samsung washer indicates a communication error between the WiFi module and the main control board (PBA). The washer has detected that signals between these two components are not being received, which is most commonly caused by a loose or incorrect connector connection or faulty solder joints. The fault does not typically affect basic wash operation but should be diagnosed to restore smart features and ensure the control system is functioning correctly.

The AE4 error is a communication fault between the WiFi module and the main control board, not a safety-critical fault involving water, heat, or motor systems. In most situations the washer can still complete wash cycles, but it is advisable to address the fault promptly since the main PBA and WiFi module communication pathway is part of the overall control system. If any other error codes appear alongside AE4, discontinue use until diagnosis is complete.

If the fix is simply reseating a loose connector, there is no parts cost and only minimal labor time involved. If the WiFi module needs replacement, parts typically range from $30 to $80 depending on the model, plus any applicable labor costs. If the main PBA is at fault, parts costs can range from $100 to $300 or more, making it worthwhile to confirm the exact failed component before ordering parts.

In many cases, yes. Start by disconnecting power to the washer, then locate the connector between the WiFi module and the main PBA and firmly reseat it, making sure the locking tab is fully engaged. If you are comfortable with electronics, you can also inspect the solder joints at the connector pads for visible cracks or cold joints. If the error returns after reseating the connector, further diagnosis or part replacement may be needed.

A power reset by unplugging the washer for a few minutes may temporarily clear the AE4 code, but if the underlying cause is a loose connector, damaged pin, or faulty solder joint, the error will return. A reset alone is not a repair. The physical connection between the WiFi module and the main PBA must be inspected and corrected for the fault to be resolved permanently.