Faulty catalytic converter, or sensors in exhaust faulty
Trouble code P0440 means:Evaporative emission control system malfunction
no a burnt out headlight will not cause a check engine light but if you go to most of the part places they will check the check engine light for free
I just unscrew and take both battery cables off the battery for about 15 minutes and put back on. This should reset the engine light. The check engine light should go out. If it doesn't, you have trouble
OBD-2 scan tool needed to check computer.
No
That requires an engine scanner to do that. Advance auto parts will scan it for free.
you check the system for trouble codes.
Try disconnecting the battery for about 10 minutes
disconnect the battery for 10 mins
There are a number of reasons why the check engine light comes on, on a Suzuki x90. This is an indication that there is some malfunction in the engine which requires attention.
HAVE VEHICLE SCANNED TO DETERMINE THE PROBLEM
It is best to get it checked.