After changing UR Pulley for almosr a week............ Now the engine service soon light showed up.......... I don't know why,but as I know from the UR manual that I can expect gaining HP by drving my car about a week. Is that possible that my ECU recognized that there is a new smaller and lighter pulley. So, Should I reset the ECU ? I checked everything was okay and there was nothing wrong with pulley or anything.............. PLEASE HELP
The ECu gave me the short code 09 and long code 04

 

Actually, I reset the ECU and drove it for a while......... There is no sign that the Engine Service light will show up again........ If so, there is something wrong on my car.......... I hope everything will be fine