I just filled up and got 38 mpg and then the check engine light comes on. I had Autozone read the codes for me and this is what they came up with - p0170 and p0172. The guy said it could be the mass air flow sensor, fuel pressure regulator, or O2 sensor but didnt know for sure and I decided to ask you guys!
I already searched and only found a post about resetting your ECU. Any suggestions!?