P0440

DTC P0440
Evaporative control system fault Drive cycle C:Signal out of range - above maximum.

Possible cause:
^ Cannister purge valve fault - stuck open.

Cannister Purge Valve Fault - Stuck Open.
CHECK THE FOLLOWING:
^ Disconnect purge valve. Attempt to suck air through closed valve using suitable tool.
POSSIBLE FAULT
^ Faulty purge valve.