I have been calling all sorts of resources to figure this out but no luck. My check engine light will not come on at all. I checked the bulb and it's good. I read the codes that the ecu is putting out and it's not for a bad ecu (TPS, fuel pump, and baro). I am in south riverside but the car is registered in Humboldt county, this means I only have to get it smogged this once and thats it! Anyone with some advice or maybe an ecu I could try in it please help.