Commonly known as the gas cap code.
The Evap system has a leak. The code is the "Large Leak" code.
Usually to get this code the gas cap is not on at all
OR
A vacume line under the hood is unpluged
OR
One of the Evap lines between the tank and Canister is broken.
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0440 means: EVAP Purge System Fault
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0440 means: EVAP Purge System Fault
Trouble code P0440 means:Evaporative emission control system malfunction
Trouble code P0440 means:Evaporative emission control system malfunction
evap system
Trouble code P0440 means: EVAP Purge System Fault Trouble code P0441 means: EVAP Purge Flow Monitor Fault
engine light on trans fluid press sensor switch
It is an EGR code Exhaust Gas Recirculation Circuit Malfunction (32)
Trouble code P0440 means: Evaporative Emission System