If your home standby is displaying this error code, resetting the controller and restarting your unit may do the trick. If your unit does not start after two automatic attempts, there is an issue. Make sure the gas to your generator is turned on. If the handle is lined up with the pipe, your gas is on. If your handle is lined across the pipe, this indicates that the gas is turned off. If the gas is on and your unit is still not working or is running rough, contact an authorized service dealer.