GE Dishwasher Error Code F23

F23 on a GE dishwasher means the control has detected a problem with the AC voltage being supplied to the inverter board. The inverter drives the wash motor, so this fault will typically prevent the dishwasher from running a wash cycle. The first step in diagnosing this code is to measure the actual AC voltage at the inverter's input terminals to determine whether the issue is a wiring or supply problem, or a failed inverter board.

No, you should not attempt to run the dishwasher while F23 is active. The code indicates a fault in the power delivery circuit to the inverter, and continued operation could cause further damage to the inverter board, wiring, or connected components. Leave the dishwasher powered off until the fault is diagnosed and repaired.

Repair costs for F23 depend on what component needs attention. If the issue is a loose connector or minor wiring repair, costs may be limited to a service call fee, typically in the range of $75 to $150. If the inverter board needs replacement, parts alone can range from $100 to $300 or more depending on the model, with total repair costs including labor potentially reaching $200 to $450. Getting a diagnostic quote before authorizing parts replacement is recommended.

Diagnosing F23 involves working with AC voltage inside the appliance, which requires proper safety precautions and a multimeter. A knowledgeable DIYer comfortable with electrical testing can check the wiring harness connections and measure voltage at the inverter. However, if the inverter board needs replacement, sourcing the correct part and installing it safely is the final repair step. If you are not confident working with live AC circuits, a qualified appliance technician should perform this diagnosis.

A reset may temporarily clear the F23 code, but if the underlying fault in the AC voltage supply or the inverter board is still present, the code will return when the dishwasher attempts to run. Resetting without repairing the root cause is not a solution. The wiring, connectors, and inverter board need to be inspected and tested to resolve the fault permanently.