The Top 5 Reasons Your Check Engine Light May Be On
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- Опубликовано: 8 май 2024
- 1. It’s Time To Replace Your Oxygen Sensor
Oxygen sensors are a common cause of “check engine” lights. This sensor is located in the emission control system of your car, and is standard on all vehicles manufactured after 1980. The oxygen sensors are used to ensure that your engine is burning the correct amount of fuel, and running at peak performance. It also works with your catalytic converter to keep your emissions in check.
Over time, the oxygen sensor or O2 sensor can get covered in oil ash. This will reduce its ability to monitor the fuel (fuel system) and oxygen mix in your engine, and it will malfunction (can cause the check engine light to illuminate). Plus, it can also damage the air conditioning system.
2. your Gas Cap Is Loose Or Faulty
Sometimes this is all it takes to illuminate your “check engine” light. It may seem silly, but a loose gas cap (or damaged gas caps) totally throws off your vehicle’s emissions systems, because fuel vapors will leak out of the gas tank. This can lead to decreased vehicle efficiency.
The fix for this problem is very simple. Just check your gas cap! Is it loose? Tighten it up, and see if your “check engine” light turns off!
If your gas cap is damaged, that’s not a problem. Head to an auto parts store, and you should be able to purchase a replacement for $5-10.
3. Your Catalytic Converter Is Failing
Catalytic converters are responsible for reducing the emissions of your vehicle by converting carbon monoxide and other dangerous gases into harmless compounds. Most catalytic converters are good for the entire lifetime of your car - they typically last over 300,000 kilometers.
However, it’s possible that your catalytic converter is the source of your problems. If you’ve noticed deteriorated fuel efficiency, strange smells, and decreased performance, you may want to get your catalytic converter inspected.
Unfortunately, the fix isn’t cheap. Most catalytic converters cost upwards of $2,000, and you’re not going to be able to replace it yourself unless you’re an experienced mechanic.
4. Mass Airflow Sensor Needs Replacement
If you don’t regularly service your car’s air filter, you could be putting your mass airflow sensor at risk (and your exhaust system). This sensor helps your car’s computer inject the proper amount of fuel into the engine, increasing performance and efficiency.
If you don’t replace your air filter, this mass air-flow sensor can start to malfunction and provide incorrect information - leading to poor gas mileage, car stalling, and increased emissions. Because of this, you should replace your car’s air filter at least once a year.
The fix is pretty simple - but can be a bit expensive. The average cost of a mass airflow sensor is around $200. It’s best to let a mechanic perform auto repairs, and to consider replacing air filters while you’re still in the shop. This will ensure your new mass airflow sensor lasts for the years to come.
5. Faulty Spark Plugs
Spark plugs can last anywhere between 75,000-200,000 kilometers, depending on when your vehicle was manufactured. Spark plugs seal your combustion chamber, and provide the spark that ignites the fuel in your vehicle’s engine (ignition system).
If you have a bad spark plug or your spark plug wires start to misfire (ignition system issues), your check engine warning light will certainly turn on, and you may feel a “jolting” sensation when you try to accelerate your car.
The good news? Spark plugs are insanely cheap - and easy to replace. You can usually purchase spark plugs for about $10 a piece, and you can usually replace your old spark plugs on your own. Check out this handy video guide to learn how to replace spark plugs!
Don’t Panic When Your Check Engine Light Comes On!
These above 5 issues are responsible for the vast majority of check engine light comes on occurrences. So next time your check engine light comes on, don’t panic. The check engine light means something, but it could be nothing at all, or one of these simple issues.
However, you shouldn’t just start replacing parts without diagnosing your issue. You can purchase a code reader if you want to diagnose your car’s issue yourself, or you can just head to your nearest auto shop for a tuneup and an analysis. 
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Thank you for the informative video.May God bless you
Thanks for the detailed info.
Thanks ever so much. It was pleasure watching, Well explained & very Useful Informative. 👍👍👍
Great explanation! Thanks for sharing.
New subscriber watching from Al Khafji Saudi Arabia 👍
Very helpful. Thank you for your generosity.
My 'CE' light was a bad EGR valve -
Local parts supply offered me the wholesale price for $155 -
Gambled on one from Amazon for $35 and watched a RUclips 'how to' and 30 minutes later problem solved going on 4 years no issues 👍
Well done boss, am sure now i will be good on that. It have been my problem for a long time
Thanks great video
I have kia forte 2013 ( got a recall letter in the mail just a couple days ago btw ) I think i may need a mass air flow sensor car stalls a bit on acceleration but there are no other problems really , added power steering fluid , got an oil change then top off not too long ago.. check engine light came on ill go for diagnostics later today tho
Thank you for your video
Thanks for your efforts
Also if your oil change is overdue can cause your check engine light on
Omg thank youu. I was so scared for my Subaru 06 sti. I check everything and nothing. Worked then I checked my oil, and it is black. So I assumed that I have to get an oil change.
Thanks
It's my cars problem, I'm not change oil since last one year😂
@@travispegues8868 to😮😢😢
@@mikunakano8628😮😢😮😂😂
Thanks for teaching me
I got a 2008 toyota tundra 4.7. Code p2436/p2438. Secondary air injector system. Bank 2 .. I don't know which part causing it
Hello I’m asking a question my Audi A4 cabriolet convertible 2005 has a engine check light and it has smoke coming out of it have any idea how that happened ?
My EPC goes on when I drive like 10 minutter, what kind off failer Will that be, and Even check engine come on. What I should do to change.i have audi a1 2011/2012 model please help me
I have a capless. Can I put a cap on anyway
YOUR AD WILL NOT EXCEPT THUMBS UP I tried it will however do the thumbsdown button but now I can't get it to go off😮 Loved your video ❤
My trax 2022 gaving me probably check engine light on 3 times 1.first it was purge pump .2 is Cadillac convert 2 sencor 3 is marjo
I've just brought a sift strainer 525i BMW 07 haha! And engine lights on plus it's saying servicing needed
Then service it
Thanks a lot dor your vid it was most informative and helpful.
C'était un plaisir de regarder🥰
I had new spark plugs put in w lifetime warranty and gas cap fits snug. I have no symptoms but service light came on when first started and it's not blinking. What do you recommend?
Same thing just happened to me. New wires too.
When should Ichange my plugs in my Dodge caravan 2015
SENSORS !!! Seriously, I have spent almost 25 percent of the purchase price of my Jeep Wrangler on replacing damn sensors (mostly labour costs due to their usually ludicrous, inaccessible locations). My mechanic (a Jeep specialist) says he wouldn’t own a Jeep newer than a 1992 model due solely to sensor and other electronic issues. He drives a CJ and TJ and they never seem to give him any issues other than regular SIMPLE servicing and uncomplicated tune-ups.
So nice
2003 Honda accord here. I just bought it. But I noticed a small stall when accelerating. Once I hit 30mph it pulls back a bit. Now the check engine light popped up, should it be a huge concern? I will try and get it checked asap. Someone let me know.
My check engine light stays on most of the time in my 2009 ford escape. A few days ago that light started flashing and it turned out to be a bad cylinder. But before then it was supposedly a bad egr valve and I had it replaced but that didn't help anything. I just had the bad cylinder replaced and that got rid of the light for a little bit but it's back on now but it is running fine. I did use an obd2 scanner and it still reads the code for the egr valve. It is my opinion that older ford vehicles are notorious for engine lights coming on and they are just not designed well. For now I'm just ignoring the stupid light as long as it isn't flashing. I will not buy another ford vehicle.
Hi your problem lies somewhere else . EGR will go bad only if you are having incomplete combustion of the gas. This generates soot or carbon and i5 starts depositing in EGR and then moves forward to intake and entire exhaust system. It contaminates the catalytic converter and the muffler.
Cylinder failure is one of the results .
I suggest you look at the injectors and service them . And check and service spark plugs ,coils and air filters as well .
But the way where are you located
Very educative ❤
A petrol cap is another issue. If it's dirty and not sealing properly. This would cause light to come on. Check first.
it's good tutors
Gas cap is very common for the ce light to be on. Spray it with wd40 clean it off and tighten it.
Mine is been on for a while, I'll try this before taking it to the mechanic to check and probably get rip off because of it lol
thank you for your comments
Terima kasih.
New my check engine come up after changing the gear oil and cahfft please what can I do
Just had an experience with check engine light = Reduced power to engine, followed by sound of engine shifting from "D" to "M".
What if you fixed the problem with the car, and check engine light is still on??
Get it scanned
What if I did it and the scanner say no problems, and light still on??
@@dandaxonebeats
Try disconnecting your positive battery lead. Turn your light's on for a few seconds. That drains the power.
Then reconnect your battery.
And restart the engine.
In some cases it resets and no engine light on.
That works!! Thank you!
@@dandaxonebeats
Cool 👍
po420 is the most common
What can make your seat belt light flashing on 2007 Nissan pick up truck
Not having your seat belt on!
How l get lastest car diagnosis machine and how much dollars
Add one gallon of lacquer thinner to gas drive for One hundred miles. Now I have more exhaust coming out. Did not have to replace cat converter.
Was your service engine light on? What code? Is it still off? Thanks, Cindy
This just saved me a trip to audi ! It was the bloody ad blue cap 😂🤦🏽♂️
I ignored my engine light for almost four years. My truck was running fine. I thought the light was just faulty or something. All that time my fuel pump was failing had to be replaced. It cost me a lot at repair shop. Will not make same mistake again.
In Nigeria all motor is show check engine light mine is more than 10 year now and still working perfectly
how much money fix it ?
Why why why do some many people not include the engine they’re working on.
I’m not gonna watch any videos that does not say the engine type
It’s good tutorial’ but what cause If Temporary the check engine light become on and off. The light become some times on while you driving short time 😮
Needs thorough investigation via computer diagnostics . There are 100 plus sensors which feed data to the ECM and it happens sequentially. So it is is possible that it gets a fault signal and then goes away and comes again when it’s the same sensor’s turn .
@@MrKhabbu I have 1.6 hdi Citroen where the Engine Light is on all the time. 3 different car repairs cant find the fault including Citroen repair shop.They all used computer diagnostics. Last bill from Citroen was 5000 dollars and the Engine Light is still on...
@@chilli2473 tell me the fault code
@@chilli2473 okay I see. Definitely bad for you.But I have 2 question as follows
1) Did anyone of these experts got a fault code while doing computer scanning . If yes what were they.
2) If yes we’re they all the same or all different what were they.
3) If no codes found then fine.
4) Since how long the you got the light on . Did you do something just before .
5) Is your car running smoothly and fine and you have no issues like low pick up low mileage rough engine .
Share details and let us take it further .
By the way where are you located
@@chilli2473 hi awaiting your response to my message
What if the engine lights is on and the air conditioner gets hotter immediately?
Why should a faulty catalytic converter cause diminished fuel economy
I have a vw polo 2003.. sometimes when i turn the key to start the car it makes a kind of scratching noise, but the engine does not turn over and the engine warning light turns on. I turn the key to the off position and retry until the engine turns over, then the engine warning light turns off. I have replaced all the spark plugs and spark plug cables, but the problem is still there from time to time.. any ideas ?
Get your starter motor's bendix change it will solved
@@harshvardhansinghsolanki8270 you are 💯 correct sir. I changed the starter approx 6 weeks ago and the car works great now 😁👍🏻
My kia car check engine on and code P2096 , i have checked plugs, MAF sensor, fuel pump and o2 sensor, spray catalyst converter , checked if there is any air leakage , but it is still on
Best to take it to the dealer. Kia is replacing engines under warranty.
My Eco light is off too
Thank you 🙏🏽 Dmax 2015 starting doing this after 9 years . Never had any problems with my DMAX !!
❤❤❤❤❤❤❤
it s good
I changed oil in my car yesterday but now it is saying check engine light
Check engine vs service engine ?
Service is just something is recommended to prevent a possible check engine light which is a problem
@@MazeedAkanni
Engine fail safemode ?
Vehicle stuck in that mode
@@Lupo32it’s so dealerships can keep bending you over charging 40% above regular shops
@@coewhat
All I know is my used 2005 mercury mountaineer I bought back in 2014
Got rendered in engine failsafe mode
In January 2023 and now I'm vehicle-less.☹
My friend drove with the handbrake on on the highway and imediately i started seeing the mcheck engine..what may be the proplem
I’m taking it to the dealer I’m no mechanic
There's no such thing as quickly when the check engine light comes on it's going to cost you one way or another especially if it's not the gas cap O2 sensors can be expensive and catalytic converters tune-ups are expensive
I have p0448
Efuck system!!
0
@@hassansalim1148 The system where you can replace everything:valves,gas cap,filler neck canister and the gas tank and still throw codes!! Hence it is called Efuck system!!
evap code. i think.
It is related to EGR valve .
I don’t know about the check engine
I have try everything then it would come back in 2-3 days
Taking to the dealer will cost atms and legs
Boos pewde mag pa tulong ano code 37 sensor 1995 honda accord
Reason number one =. You are driving a non deleted diesel
Egr?
Right
What causes high idle on the car
High idle can be due to cold start in the morning, faulty mass airflow sensor faulty fuel temperature sensor.
Of course there is more to it. But these are primary culprits
Bad ECU reading…you might need to do a reset on it.
gas cap dosent have any sensor to indicate engin light
Fuel pump sensor connects to it maybe ? Linking to engine ..
Yes there is one . Look closely you may see it
Yes it does my Chrysler 300 let's me know it's my gas cap
But it effects the pressure in the gas tank and the sensor turns the light on. 😅
I left my gas cap loose for several days & now I have this issue
I am too and now I can't renew my registration
Did it go away after tightening it?
@@hearditfirst8010 yes
@@Ur2ez4me81 I can't wait till I get home and tighten mine. Hopefully that's the issue.
@@hearditfirst8010 did it vanish?
Every time I get gas the light come on
Please how does it dissappear?
My check engine light is on I keep driving
My oil change was was overdue and I changed it and then the the check engine sign still appears what is the problem
Check by obd scanner
When oil change is overdue the light comes with a message and or image of the oil can light up. You can get it reset and see. If it goes away then fine and if comes back then you need a scan
They have to reset your computer. They do that for free.
The reset is..turn ignition on..tap gas peddle three times fast..this resets the oil life timer..
P any
Nice one
W
I don’t even want a car or toads or modern civilization I just want all this techno nagging to go away
Jueueuue
1) Loose or damage gas cap
2) Faulty Oxygen Sensor
3) Faulty Catalytic Converter
4) Mas air flow sensor
5) Ignition Coil & Spark Plugs
Thank you
❤.wnjjuj
😊