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Why does my check engine light blink on and off on my ford f-150?
JENNIFER6632
The computer illuminates the "check engine" light when it detects a condition needing attention, such as a faulty sensor. The computer will FLASH the check engine light when the condition is significant and should be addressed immediately.
You can purchase, rent or borrow a computer code scanner at most auto parts retailers such as Checker Auto Parts or Auto Zone.
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∙ 16y ago
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