J jason c New member Joined Dec 3, 2008 Messages 4 Reaction score 0 Points 0 Dec 3, 2008 #1 I connected a OBDII scanner to the truck and it showed code P0440 which is evaporative emissions fault.
I connected a OBDII scanner to the truck and it showed code P0440 which is evaporative emissions fault.
J junior New member Joined Nov 21, 2008 Messages 30 Reaction score 0 Points 0 Dec 3, 2008 #2 This is usually a loose or faulty gas cap. The cap is tested during emissions tests,so the truck's computer must recognize a gas cap fault.
This is usually a loose or faulty gas cap. The cap is tested during emissions tests,so the truck's computer must recognize a gas cap fault.
