Originally posted by popag99
Well im running regular unleaded. I had a check engine light then my local honda dealership said the code that came on came on when the car was off, which is impossible. Since it came on with no reason how they just reset the computer so now there is no engine code. (I had another dealership check the engine code)
probably o2 sensor code...that will REALLY mess up your mpg, when i had a code i couldn't ever break 16 mpg.