There are dozens of reasons why a "Check Engine" light could come on. Until you get the codes read, you can't begin to have a reason why. Go to your local auto parts place, most will read the codes for free. Infinitis do have a trick, though. If the last time you filled the tank, the gas cap didn't get fully tightened, a day or so later, the Check Engine light comes on. Confirm the cap is tight, and if it wasn't, the light will go off tomorrow.
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There are dozens of reasons why a "Check Engine" light could come on. Until you get the codes read, you can't begin to have a reason why. Go to your local auto parts place, most will read the codes for free.
Infinitis do have a trick, though. If the last time you filled the tank, the gas cap didn't get fully tightened, a day or so later, the Check Engine light comes on. Confirm the cap is tight, and if it wasn't, the light will go off tomorrow.