the code i got from Autozone was P1456 the car does not idle proper. i used several different gas treatments Lucas, Cfoam etc. check engine light stays on

 

if ur cars not idling, i think it would be something with ur IACV...i suggest cleaning it out or adjusting the wire for the pedal which is located in front of the Intake manifold...two wires, one for the pedal another for cruise control, tighten or loosen the nut on the wire for the pedal u desire

 

P1456 is for Emission Control System Leak Detected. Usually just means you need to tighten or replace the fuel cap.