Amana Dishwasher Error Code 8-3

Code 8-3 means the control board has detected the drain motor drive circuit is stuck on. The circuit inside the control that switches power to the drain motor is not shutting off when it should. This fault is rooted in the control board, though a shorted drain motor or damaged wiring can also trigger or contribute to the condition.

Running the dishwasher with an active 8-3 code is not advisable. A stuck drain motor drive circuit can cause the drain motor to run continuously or at wrong times, potentially burning out the motor and causing further damage to the control board. Unplug the unit until the fault is diagnosed and repaired.

Yes. A drain motor with a shorted winding or damaged connector can draw enough excess current through the control board's drive circuit to damage or destroy that circuit, resulting in the 8-3 code. Always inspect the drain motor and its wiring for signs of overheating or shorting before replacing the control board, otherwise installing a new control board into an existing shorted motor circuit may damage the replacement board as well.

Start by unplugging the dishwasher or shutting off the circuit breaker. Inspect the drain motor, its wiring harness, and connectors for any signs of overheating, melting, or shorting. If you find damage on the motor or wiring, replace those components first. If no damage is found or after damaged components are replaced, the control board will need to be replaced, as the drive circuit fault originates there.

A replacement control board for an Amana dishwasher typically runs between $80 and $200 for the part, depending on the model. A drain motor generally costs $30 to $80. If you hire a technician, expect $100 to $200 in labor on top of parts. DIY replacement of either component is manageable for someone comfortable working with appliance electronics, as both parts are accessible once the door panel is removed.