I've got one of those pesky P0457 CEL on my 2003. Did the easy thing and replaced the cap. Didn't do it. Does anyone have experience with using RomRaider to make this code go away permanently? The other quick fix I've read and will try first is to clear the code and fill the tank up. If you don't let it get below 3/4 tank it supposedly will not ask for that sensor. Theory is that it should pass the state emissions inspection while it's in this state of never having asked for the sensor allowing all the others system to come back up. As I understand it you can get a pass as long as no more than one sensor is not reading. Anyone have any related experience. Thanks!