Check Engine Light On? Do This First (Before You Pay for Anything)
What a solid vs. flashing light means, the free gas-cap check, how to get the code read, rough costs, and what to ask a shop.
Car Care Decoded
Car repair, explained in plain language.
Short videos and written guides for everyday drivers: what a warning light means, what to do first, and what to ask before you pay for a repair.
Start here
Check engine light on? Do this first.
- Look at the light. Solid usually means you can keep driving but should get it checked soon. Flashing means pull over safely and turn the engine off.
- Check the gas cap. A loose cap can trigger the light. Tightening it is free.
- Get the code read. Many auto parts stores read it for free. A code is a clue, not a final answer.
Source: Kelley Blue Book
Latest videos and guides
Check Engine Light On? What It Means and What to Do First
Solid vs. flashing, the free gas-cap check, getting the code read, approximate repair costs, and the questions to ask a shop.
Get the next video when it’s out
Car repair, explained in plain language. New videos on the Car Care Decoded YouTube channel.
General information only. Always have your own vehicle inspected by a qualified technician.