GE Range Error Code F91

F91 on a GE range indicates a Main Logic Board internal touch key chip signal error. The touch key chip, which is integrated directly onto the control board, is producing an invalid or missing signal. This is an internal board fault and the Main Logic Board will need to be replaced to resolve it.

An F91 error means the control board's touch interface circuitry is not functioning correctly, which could result in unreliable or unresponsive controls. Using the range in this condition is not recommended, as you may not be able to accurately control cooking functions or shut them off reliably. It is best to leave the range off until the board is replaced.

Power cycling the range by unplugging it or turning off the circuit breaker for a few minutes may temporarily clear the F91 code. However, because the fault is caused by a failed internal chip on the Main Logic Board, the error will almost certainly return once the board is powered back up. A reset does not address the underlying hardware failure.

The fix for F91 is replacement of the Main Logic Board, which is a task some experienced DIYers can complete. You will need to locate the correct replacement board for your specific model, disconnect power to the range, and swap out the board following the connection layout of the original. If you are uncomfortable working with appliance electronics, a qualified technician should perform the repair.

The cost to repair an F91 error depends primarily on the price of the replacement Main Logic Board, which typically ranges from around $100 to $350 or more depending on the model. If you hire a technician, labor costs will add another $75 to $200 depending on your location and the service provider. DIY replacement of the board can significantly reduce the total cost.