My check engine light is on and its throwing code 17 its a ob1 p28 basic chipped with chrome. It never did this before until i *** up my vtec solenoid switch, and vtec pressure switch. So the 17 code is speed sensor light but my rpm works and my speed sensor works perfectly fine. Why does it throw a check engine light? My vtec does not work still though could that be it too. I really need help. Again my rppm works and speed sensor works bc my rpm moves and mph moves so y would it throw a speed sensor light? iono plz help h-t