2 cel codes but they are the same
 

Any one experience this. My cel went on today and it i had 2 codes but they were the same. I'm not really worried about the code because it comes on once in a while. I had the code turn on about 10 times in the pass 5-6 months
Well i use the Actron obd2, code is p0440-evap emission control malfunction.
Just want to know why the same code appeared twice in one scan?

ian