Samsung Dishwasher Error Code AE6

AE6 indicates a BLDC motor communication error where the main control board (Main PBA) receives no response from the inverter board (Inverter PBA) for 3 seconds. The system retries by shutting off the inverter relay for 2 minutes and repeats this cycle 3 times before displaying the code. It points to a breakdown in communication between the two control boards, most often caused by a faulty connector or wiring harness.

The dishwasher will not complete a wash cycle while this error is active, so continued use is not possible without resolving the fault. The error does represent a communication failure in the motor drive system, so running the unit in this state is not advisable. Power the appliance off until the issue is diagnosed and repaired.

Repair costs vary depending on the faulty component. If the fix is simply reseating a connector, the only cost is labor, which typically runs in the range of $75 to $150 for a service call. Replacing an inverter PBA or main PBA can add $100 to $300 or more in parts, plus labor. Getting a diagnosis before committing to a board replacement is the best way to avoid unnecessary expense.

A knowledgeable DIYer can start by unplugging the dishwasher, accessing the control area, and checking that the connectors at Main PBA CN401 and Inverter PBA CN1 are fully seated and free of corrosion. If the connections look good, diagnosing a failed inverter PBA or main PBA typically requires a multimeter and some familiarity with board-level testing. Board replacement is straightforward mechanically but sourcing the correct part is important.

A power reset may temporarily clear the displayed code, but because AE6 requires the no-response condition to occur 3 consecutive times before appearing, the error will return quickly if the underlying fault is still present. Resetting is useful for confirming whether the issue is intermittent, but it is not a repair. The root cause in the wiring or boards must be addressed.