Amana Dishwasher Error Code 4-3

Code 4-3 means the control board detected that the wash motor is not running. The board monitors the motor drive and sense circuit during operation, and when it receives no signal confirming motor activity, it stops the cycle and stores this code. The cause can be a loose connection in the motor circuit, a failed wash motor, or a fault in the control board's motor drive circuitry.

No. When code 4-3 is active, the wash motor is not running, which means the dishwasher cannot circulate or spray water. Running a cycle in this condition will not clean any dishes and the cycle will either halt or complete without any actual washing occurring. The underlying fault needs to be resolved before the dishwasher will function normally.

Amana dishwasher diagnostic mode is typically entered by pressing a specific sequence of buttons on the control panel, which varies by model. Consult your model's service manual or tech sheet, usually found taped inside the door panel, for the exact sequence. Once in diagnostics, the control will cycle through components including the wash motor. If the motor does not activate during this test, proceed with checking wiring connections and motor resistance as described in the service documentation for code 4-3.

Start by unplugging the dishwasher and locating the wash motor wiring harness. Disconnect and firmly reseat every connector in the motor circuit, checking for corrosion or pushed-back terminals. After reconnecting power, run the diagnostic cycle to see if the motor activates. If the motor still does not run, use a multimeter to check the resistance across the motor terminals. A reading outside the specified range means the motor needs replacement. If the motor checks out electrically, the control board's motor drive circuit is likely the fault.

If the fix is simply reseating a loose connector, there is no parts cost. A replacement wash motor typically costs between $80 and $150 for the part, and a control board replacement can range from $100 to $200 or more depending on the model. Labor from an appliance technician generally adds $75 to $150 on top of parts. Checking the connections yourself first is worth doing before spending money on components, since a loose wire is a common cause of this code.