GE Range Error Code F104

F104 on a GE range means the main control board (GPU) and the oven user interface (OUI) display panel have lost communication with each other. This fault is detected when the data link between the two boards is interrupted. The cause is most often a loose or damaged ribbon cable connecting the two components. The range may display this code at startup or mid-operation when the connection fails.

A power reset, performed by unplugging the range or switching off the circuit breaker for a few minutes, may temporarily clear F104 if the fault was caused by a transient power issue. However, if the code returns after the reset, there is a persistent physical problem such as a loose or damaged ribbon cable that must be addressed. A reset alone is not a permanent fix for a hardware connection issue.

If the fix is simply reseating a ribbon cable, the repair may cost nothing beyond a service call fee, which typically ranges from $75 to $150. If a ribbon cable needs replacement, parts are generally inexpensive, often in the $15 to $50 range. Replacing a GPU or OUI control board is more expensive, with parts typically ranging from $100 to $350 or more depending on the model, plus labor costs.

Start by disconnecting power to the range, then access the control panel area and inspect the ribbon cables connecting the GPU and OUI boards. Firmly reseat any loose connectors and check for visible cable damage. If the cables appear secure and undamaged but the error returns, one of the two boards may need to be replaced.

Operating the range with an active F104 fault is not recommended. Because the control board and display panel are not communicating properly, the range may not respond correctly to user inputs or may not display accurate status information. It is best to resolve the fault before using the appliance to avoid unpredictable behavior.