GE Dishwasher Error Code F203

F203 means the machine control board has detected a fault within itself. The control board is the main electronic module that manages all dishwasher functions, and its internal diagnostics have flagged an unrecoverable error. This code points directly to the control board as the failed component. Replacing the board is the prescribed repair.

A power reset is unlikely to permanently resolve F203. Because this code is generated by the control board detecting a fault in its own circuitry, the underlying hardware failure will continue to trigger the error after any reset. A reset may temporarily clear the display, but the code will typically return once the dishwasher attempts to run a cycle.

The cost depends on whether you repair it yourself or hire a technician. A replacement machine control board for a GE dishwasher typically runs anywhere from $80 to $250 or more depending on the model. If you hire a professional, expect to add labor costs ranging from $100 to $200, bringing the total repair estimate to roughly $180 to $450 or more depending on your location and the specific dishwasher model.

Replacing the machine control board is a task many experienced DIYers can perform, as it typically involves disconnecting the wiring harness connectors and swapping the board module. However, working near electrical components requires turning off power to the dishwasher at the breaker before beginning. If you are not comfortable working with appliance electronics, a qualified technician should perform the repair.

It is not recommended to continue using the dishwasher while F203 is active. A faulty control board cannot reliably manage cycle functions, which could result in improper water fill, failure to drain, or uncontrolled operation of the heating element. Discontinue use until the control board has been replaced.