https://www.amazon.com/Veepeak-Bluet...3-fc5054845b7e
The above 13 dollar item and an app called
Torque
Will allow about 300 very cool things plus tell you what your codes are. Post 254 in my signature thread gives you the basics of what marvelous things that 13 buck thing will do for you.
But
I've never ever seen a check engine light fatality.
If it is anything near catastrophic
Limp mode
Kicks in.
Try the gas cap thing, go to the auto place as said above, order the obd2 reader.
But mostly
CHECK BACK HERE WITH THE CORRECT CODES BEFORE PAYING FOR ANYTHING LIKE REPAIRS.