if the check engine light turns on it's better to have it checked with a scanner para masabi kung ano talaga problem. Yung Civic ko nag-check engine last week & I had it checked sa Servitek, ang mahal nga lang, P950. It showed that I have to replace the Throttle Position Sensor. Nangyayari naman sa Civic ko is it jerks at times.

just to add: the check engine light has to be on when having it checked with a scanner.