KitchenAid Dishwasher Error Code 4-3

Error code 4-3 means the dishwasher's control detected that the wash motor is not running. The wash motor drives the circulation pump that moves water through the spray arms during the wash cycle. The fault points to either a loose or high-resistance connection in the motor circuit or a wash motor that has failed and needs replacement.

No, you should not continue running the dishwasher while this error is active. With the wash motor not running, the dishwasher cannot clean dishes properly and the control will halt the cycle. Attempting to force repeated cycles without addressing the fault will not resolve the issue and could place additional stress on related electrical components.

A reset may temporarily clear the code from the display, but it will not resolve the underlying problem. If the wash motor circuit still has a loose connection or the motor has failed, the error will return as soon as the dishwasher attempts to run the wash motor again. The root cause must be diagnosed and corrected for the code to stay clear.

A knowledgeable DIYer can address this by first running the diagnostic cycle to confirm motor behavior, then disconnecting power and inspecting all connections in the wash motor circuit for looseness or corrosion. If a connection issue is found, cleaning and re-securing the terminals may resolve the code. If the motor itself has failed based on resistance testing, replacing the wash motor requires moderate disassembly of the dishwasher and is more involved but still within reach for experienced DIYers.

If the problem is only a loose or corroded connection, the repair may cost little to nothing beyond your time. If the wash motor needs replacement, parts alone typically run in the range of $100 to $250 depending on the specific model, with professional labor adding another $100 to $200 on top of that. Getting a diagnosis first will clarify whether a simple connection fix or a full motor replacement is needed.