Can premium fuel cause a check engine light?
9/3/16, 07:04 PM
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Can premium fuel cause a check engine light?
2016 eco with 9800 mIles and I get a check engine light out of no where. I did put premium fuel in but had gone through almost 1/2 a tank before the light came on. Could it be the higher octane fuel? Can higher octane hurt the engine?
9/3/16, 08:08 PM
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No. Higher octane is not to blame. It can't hurt the engine. Opposite is true. If you have a 91 octane tune, but run 87 you can get premature ignition, or knock. But not the other way around.
Unless the fuel was somehow contaminated, it has nothing to do with your engine light. Have the dealer check out the DTCs stored in the engine ECU.
Unless the fuel was somehow contaminated, it has nothing to do with your engine light. Have the dealer check out the DTCs stored in the engine ECU.
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