OBD II show a P1504 code meaning Intake Air Control Circuit Malfunction how to repair?

yes...a simple IAT sensor normally less than 15 bucks....I need to know what year to shop for ye~

I REPLACE THE IAC VALVE AND STILL HAVE CODE P1504

If you just replaced it there should be no reason for it showing a code,erasing old code with code scanner or disconnecting negative cable should turn off check engine light.A possible loose connection at pig tail is all I can think of