Trouble Code P0446 and reduced fuel efficiency
One of the more common engine trouble codes (aka OBD-II codes) is P0446, which indicates a problem with the EVAP system. This code recently came up, again, in our forums when user Branch1989 asked about poor fuel mileage on his Chevrolet Silverado. Branch1989 actually had three codes thrown: P0430, P0116, …
