GE Range Error Code F105

F105 indicates a wake-up procedure failure between the OUI (Oven User Interface) and the GPU control module. At power-up, these two boards are supposed to establish communication with each other, and F105 appears when that handshake fails. The fault can be caused by a power glitch, a wiring issue, or a failed control board. Cycling the power for 30 seconds is the first recommended step.

No, it is not advisable to operate the range while F105 is active. The error means the control system did not complete its startup correctly, and the range may not respond predictably to inputs. On a gas model in particular, using the appliance with an unverified control state creates a safety risk. Clear the error first and confirm normal operation before using the range.

Start by inspecting the wiring harness and connectors between the two boards for any loose, corroded, or damaged connections, since a wiring fault is a less expensive fix than board replacement. If the display is completely dead or unresponsive, the OUI board is a likely culprit. If the display powers on but the range still logs F105 after a fresh power cycle, the GPU module should be evaluated. A technician with the appropriate diagnostic tools can check communication signals at each board to pinpoint the failed component.

It can, and it is always the first step to try. Unplug the range or turn off its circuit breaker for 30 seconds, then restore power. If the error was triggered by a transient power disruption, the reset will allow both control modules to re-initialize and communicate successfully. If F105 returns immediately after the reset, a hardware fault is likely present and further diagnosis is needed.

If the error clears with a power reset, there is no parts cost at all. If a control board requires replacement, parts alone typically range from around 100 dollars to 350 dollars or more depending on the specific board and model. Adding professional labor, total repair costs generally fall in the range of 200 dollars to 550 dollars. Getting a diagnosis from a qualified technician before ordering parts is recommended to confirm which module has failed.