Maytag Dishwasher Error Code SF6

SF6 is a Relay Current Failure code indicating that a relay circuit on the control board produced an out-of-range current reading during the board manufacturing functional test. This code is only generated during factory-level testing and does not appear during normal operation or standard field diagnostic modes. It is not a code that should appear in everyday use, and its presence in a field unit suggests a problem with the control board itself.

SF6 is a manufacturing-level diagnostic code and is not triggered by conditions during normal dishwasher operation. If your dishwasher is otherwise running without symptoms, it is unlikely to pose an immediate safety risk. However, a relay circuit that is intermittently out of spec could potentially affect the performance or reliability of components like the wash motor or heating element over time, so having the control board evaluated is advisable.

SF6 is generated exclusively during the board manufacturing functional test mode and is not stored or displayed in the standard field diagnostic modes. Performing a standard reset, such as cycling the power or pressing a reset button sequence, is unlikely to address the underlying relay circuit fault. If the code is somehow appearing in a field unit, the fault resides in the control board hardware and will not be resolved by a simple reset.

Because SF6 is tied to the internal relay circuit of the main control board and appears only in a factory test mode, there are no user-adjustable components or simple field fixes that address the root cause. The resolution typically requires replacing the main control board. If you are comfortable working with appliance electronics and can source the correct board, replacement is feasible for a skilled DIYer, but if you are unsure, a qualified technician should handle it.

Since SF6 points to the main control board's relay circuit, the primary repair cost involves replacing the control board. Control board parts for Maytag dishwashers typically range from around $100 to $250 depending on the model, and professional labor to diagnose and install the board can add another $75 to $150. Total repair costs generally fall in the range of $175 to $400 when handled by a technician.