Aver here in Chile the Servis light refers to the light indicating oil change or distribution strap change and that, the Chekengine light is the warning of the electronic injection system, it depends on which one you mean, if you have the drawing of an engine or says check, it is the injection, if it is not the other. If it turns on, it is only a current problem for one thing although in some extraordinary cases it is turned on by a land problem. Now it is important to check it since it tells you of a problem and the computer is in a state of emergency, if you do not notice a change in the walk you do not let yourself be and try to scan it, it is the best way of saver, and the long one the most economical since you do not change things to the hazar, someone will tell you that it is flowing another tps and thus, now it has some real problem your car or is it only the light?