GE Range Error Code F120

The F120 code means the range detected that a control panel key was held down continuously for more than 60 seconds. The control board interprets this as a fault rather than normal input. It will lock out operation to prevent accidental commands. The cause is most often a stuck, dirty, or mechanically failed keypad.

The F120 fault itself is a control system warning and not a direct safety hazard. However, the range will restrict normal operation while the code is active, which means cooking functions may be unavailable. Address the fault promptly to restore proper control and prevent any unintended operation that could result from a continuously active key input.

Resetting the range by cutting power at the circuit breaker for 30 to 60 seconds will often clear the F120 code temporarily. However, if the underlying cause, such as a stuck key, damaged keypad, or shorted membrane, is not corrected, the code will return once power is restored and the control board detects the same fault condition again. A reset should be used as a first step to confirm the error, not as a permanent solution.

In many cases, a homeowner can resolve this error by thoroughly cleaning the control panel surface to remove any debris or sticky residue that may be holding a key down. If cleaning does not help, replacing the membrane keypad is a moderately involved repair that requires disconnecting the ribbon cable and is within reach of a confident DIYer. If the control board is at fault, a technician is recommended for proper diagnosis and replacement.

If the fix is simply cleaning the keypad, there is no parts cost involved. A replacement membrane keypad typically costs in the range of $40 to $120 depending on the model. If the electronic control board needs to be replaced, parts alone can run from $150 to $350 or more, with additional labor costs if a technician performs the repair.