OBD2 code "U0401" ?
After installing my Airaid CAI I got this code "U0401" from Hypertec tuner(Not sure the CAI has anything to do with it). I connected my OBD2 reader and it shows a "yellow" light and some flashing indicators..."C, EV, O, CH, E". My OBD2 reader evidently does not show "U" codes but the manual indicates the computer is monitoring these values and hasn't finished yet. So the check engine light is not on. Telling the OBD2 reader to "erase" does nothing since on the next "read" it shows the same indication. Question is will the computer eventually stop monitoring these values and go back to normal or does it really require work?