Check engine light

Asked by Michael Jan 30, 2019 at 12:15 PM about the 2010 Toyota Corolla S

Question type: Maintenance & Repair

My check engine light is on, I had a computer
diagnostic and was told there were no codes.

1 Answer
42,970

Hornet_2497 answered 5 years ago

The OBD two diagnostics is powered through fuse #21 in the dash board fuse block. I am guess the scan tool did not "light up" and the tech thinks there's no code. Not so. The check engine light is triggered when there is a stored code. He just didn't find it. Try again at an auto parts store and have it scanned for free. They will explain, and you can google the codes for more information.

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