cause of code p0456?
I recently had code p 0401 on my 2000 taurus sel. I ran the car very low on gas and the code came up. I changed the dpfe sensor and the code cleared and car ran great again. Now about a month later I have code p0456 show up - small evap leak detected. My mpg has decrease a bit, no a whole lot, but some. I really have no idea on where to start looking to correct this problem. I tried the removal of the gas cap and didnt clear it. Any help on where to look would be helpful. I do wonder if the fuel filter got clogged up with junk when I ran it low on gas and this maybe is the cause of the problem. Thanks in advance for the help.