I have been banging my head I have hi hydrocarbons bank 1 sensor 2 bank 2 sensor 2 is perfect it has 2 cats and are new, new o2 sensors and cat monitors, new map sensor, it wont pass smog. hc is 403 at idle 394 at 2500,co2 is 14.9 both banks o2 is 0.0 at idle ... Login to read more.