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If the light is on and it is still running properly, most likely there is a leak in the evaporative emissions system (EVAP). This can be caused by something as simple as not tightening the fuel cap after refueling, a bad fuel cap, or leak in one of the EVAP lines.
With that in mind, what needs done is first, confirm the fuel cap is tight and properly installed. If it is, you need to retrieve the diagnostic trouble codes stored in the system. Here is a quick video showing how that is done:
Here is a link that discusses the most common causes of a check engine light:
I realize most people don't own a scanner, but often times a parts store will do it for free or lend/rent a scanner to you. If you could, have that done first and let me know the trouble codes that are found.
Take care and I will watch for your reply.
Thursday, May 9th, 2019 AT 7:03 PM