My check engine light doesn't go away and doesn't have any code
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I have sent the car to the shop and they clean the gasoline and turn off the light, but after one day, the light comes up again. The repair shop insists is the gasoline, but I have change gas station and the problem persist. I'm afraid the problem is not the gasoline and the car could have a bigger problem.
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I took it to a different dealer but I believe they don't know what is going on.