Check Engine Light Comes On and Off in Your Car? What it Means

Check engine light turns on and off in your car. How to fix check engine light in your car if it comes on and then off, DIY with Scotty Kilmer. How to diagnose a check engine light that flashes, stays on, or blinks and what the codes mean. DIY car repair with Scotty Kilmer, an auto mechanic for the last 50 years.

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⬇️Things used in this video:
2. Common Sense

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⬇️Scotty’s Top DIY Tools:

⬇️Things used in this video:
2. Common Sense

🛠Check out my Garage to see what I use every day and highly recommend:

Consider subscribing and press the bell 🛎 icon to be notified of all new videos.

👉Follow me on Instagram for the latest news, funnies, and exclusive info / pics:

[JJones-gwvy]

Scotty, please never change your channel content. I love the great advice you have and the goofy stuff you do in your videos. Popping out of the trunk and filming random things like you do always makes me smile.

[peterreed]

I’m so glad you said that Scotty!! I almost added Pepto to my gas tank!!!
You’ve saved me again!!

[qualityrenov]

I just fail to understand why would 20 idiots leave this guy thumbs down! he's going way out of his way to help people, and he gets thumbs down for his pains!

[MimiMimi-jkdv]

Easy fix for that engine light on...I put a tape on it..so I don't see it

[sugahill]

Im such an idiot when it comes to cars. But thankful your videos have saved me thousands of $$.

[BOOMER]

Bought my 1st car yesterday after watching most of Scotty's videos I went with a Toyota Camry :D

[dimik]

I like that Scotty keeps his vids short and to the point, for the most part.
My car's check engine light is always on. It's been about 7 years. It was one of the reasons the dude sold me the car. I just check the oil and use some common mechanical sense. No probs and I got it for a good price.

[abdulhaffizumar]

If you watch one of Scotty's video and you didn't smile, you're having a really really really REALLY bad day!

[thatguy]

It means your wallet will suffer a huge weight reduction

[pablonecoechea]

Scotty Kilmer videos always are like therapy after work... I love watching your videos. Over and over... you make to see the car problem so funny and so easy. Thank you MR. Scotty Kilmer.👍👍

[rkburdette]

Hey Scotty, I really appreciate your videos. They helped me understand a lot. I was able to pass my ASE G1 test. As a new mechanic I have learned a lot and just wanted to say thanks for sharing your knowledge.

[henrymccomments]

So helpful gives me piece of mind I swear this happened to me last week and Iv been living in fear thinking something might be wrong

[thomasmagnum]

Brilliant advice Scotty. My 2003 Envoy XL threw a P0172 code on the obd2 reader... too rich. But then about 300 miles later it went off and hasn't come back yet. I think I am going to forget about it for now. Good advice again like always! Keep up good work.

[dannywmeeks]

This is probably the most helpful vide of Scotty's that I have seen. I like a lot of them, but this one answers a question I have had for years!

[stephenmartini]

Scotty, I'm old-school and pretty much know what my car is doing, all the time. Believe it or not, but I have never been compelled to stop at a parts store to have one of those diagnostic machines read my codes. I bought a 1991 Chevy Cavalier RS, 2.2 Iron Duke with 94, 000 on the clock. The previous owner said, it was on it's last legs. After driving just five miles, I discovered his "mechanic" had set his plugs at .035 when they should have been .045! I changed the radiator and starter, oil change every 3000 mi. The air never worked but I don't mind. It doesn't burn oil and doesn't leak and the 3 sp. automatic is sound. It's my daily driver putting 84, 000 bringing it up to 178, 000 since I bought it. Just today, I noticed the oil is down about a pint. I know when I need a tuneup just by the feel of it and my Check light has never come on.

[LovShonda]

I've been to every Auto Zone in town and none of the men at any of them gave me any of this info. Thank you!! Off of This one video I got all the info. I needed. Thanks again for sharing!!

[darthpelvis]

My check engine light has never lit up while driving until last week for a brief moment, did it again yesterday so I got worried BUT after watching this video I feel relieved

[brianmerz]

Scotty, you don't age! I have found a ton of information in your older videos, but you always look the same. Great genes.

[anamariacoyote]

This started occurring with my 2006 Pontiac Montana after filling up at Costco. I want to blame the Costco gas but I did plug in my code reader to see it's P0171. I panicked and told my mechanic but then the check engine light went off. My mechanic gave basically the same explanation as Scotty. Yet now the check engine light came back on again. It's annoying because the van is running fine. I love Scotty's videos. He reminds me of my late father who was a damn good mechanic. Thanks Scotty!