Q: What does it mean when the MIL stays on after car if shut off?

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The check engine light comes on when I turn the vehicle off?

My car has 146251 miles.
My car has an automatic transmission.

You may have a sticking EFI relay in the main fuse box in the engine compartment. This relay if stuck on can keep power to the computer to turn on check engine light. Replace the relay and then retest.

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