Three different codes - P0440 - P0456 - P0463

[Taylor513]

So just recently over the past few weeks I have had three codes come up. P04440 - P0456 and last night P0463.

I’m not too worried about them because the truck still runs and drives fine and based off what I have read it won’t do any long term damage. I clear the codes and it’ll go probably 5-7 days or even longer before one might pop back up.

Since they’re all sort of related to the same thing could it be something as simple as a sensor like the p0463 causing these to come up? Has anyone ever had this happen before? If so, what was a fix that you did?

 

[mildew555]

I've had P0440, P0456 show repeatedly for as long as I've had my 2003 Dodge Ram 1500 Quad 5.7L.
(3 years) I've sought mechanics advice and they've informed not to worry that its an environmental non concern. I'd like to get this cleared and if I can address the root cause event better. I tried changing my gas cap, that didn't help. I saw a Youtube recently on trying to change out the two lines going to the module (located below the cab), so I'm looking on this forum to see what advice I can find as well. A coworker of mine had a similar issue in his near year Chevrolet, I believe he had the pump changed and resolved it.

 

[CunningStunt]

Pretty sure the Purge valve and PCV trigger these codes. I did both at the same time and cleared mine up. Also check intake manifold bolts are all snug. They tend to loosen over time and can cause emissions codes.