defo

iTrader: (6)

I just got this CEL, and I did a search and found several items could be causing the P0440 code.

I would like to hear from those who have had this code, and had the repair(s) done. I want to determine the most probable cause, and check that first.

So, please don't type a list of things it COULD be. Just list what you had repaired.

Thanks!