KitchenAid Dishwasher Error Code 10-2

Code 10-2 means the control board has detected an electrical problem in the vent wax motor circuit. This includes either an open circuit caused by a loose or broken wiring connection, or a failed vent wax motor that is no longer conducting electricity properly. The vent wax motor controls the steam vent door on the dishwasher during the drying cycle.

The dishwasher may still wash dishes, but the drying cycle will not function correctly because the vent wax motor controls steam release during drying. Running the appliance in this condition means dishes will not dry properly and the code will persist. There is no safety risk from continuing to use it for washing, but the underlying electrical fault should be repaired to restore full function.

Disconnect power to the dishwasher first. Remove the inner door panel to access the vent wax motor and disconnect its wiring harness connector. Set a multimeter to the resistance (ohms) setting and probe both terminals on the motor. A functional wax motor will show a measurable resistance reading. If the meter reads OL or infinite resistance, the motor winding is open and the motor needs to be replaced. Also test continuity along each wire in the circuit from the motor back toward the control board to rule out a break in the harness.

Start by unplugging the dishwasher or shutting off the circuit breaker. Access the vent wax motor, which is typically located in the door panel, and use a multimeter to test its resistance. Also inspect every connector in the vent circuit for loose, corroded, or damaged terminals. If a connection is loose, reseat it and clear the code. If the wax motor reads open (infinite resistance) on the multimeter, replace the motor. A technician is advisable if you are not comfortable working inside the door panel or interpreting resistance readings.

If the problem is only a loose connector, the repair costs nothing beyond your time. A replacement vent wax motor part typically costs between $20 and $60 depending on the model. If you hire a technician, expect a service call fee plus labor, which commonly brings the total to $100 to $200. Diagnosing this yourself with a multimeter before calling a technician can save significant money if the fix turns out to be a loose connection.