On way home check engine light came on. Got home and hooked up code reader and got the P0302. Just replaced spark plugs a couple weeks ago. Also a new AEM air filter installed also.When giving it gas it was sluggish at times. But when I took foot off gas pedal check engine light went off. Foot back on and check engine light back on. Car has 104,777 miles on it. Would replacing just coil pack fix issue.