My Engine Power Reduced light came on recently and i dont know what it could be. I turned the car off then back on again and it ran completely fine after. I dont know what the problem could be or what to change. I am still have a problem with not having a 5th gear even though i dont mind it. I just want help with knowing what to do.

 

Pull the codes and see what check engine light it's setting when reduced power is coming on; it could be many things. Autozone will read your codes for free, otherwise any code scanner or bluetooth obd reader and an app on your phone. That will tell you what direction you need to go in to start diagnosing.