It's an evaporative emission system leak. Usually kicked off when the gas cap is not secured after refueling. It will show up usually after the engine has cooled and restarted the next day.
Generic codes P0440 Evaporative emission system malfunction P0401 Exhaust gas recirculation system Insufficient flow detected.
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0440 means:Evaporative emission control system malfunction
bad o2 sensor on left bank
Trouble code P0440 means: Evaporative Emission System
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0171 means: Fuel Trim System Lean (Bank 1 Trouble code P0440 means: EVAP System No Flow During Purge
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0440 means:Evaporative emission control system malfunction