HYUNDAI P0420 CODE | Catalyst Efficiency Below Threshold Bank 1 SENSOR

HYUNDAI P0420 CODE | Catalyst Efficiency Below Threshold Bank 1 SENSOR | DIAG AND REPAIR EASILY

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Жыл бұрын

JOIN GASDIESEL GARAGE AS WE DIAGNOSE AND REPAIR THE MOST COMMON CHECK ENGINE LIGHT TROUBLE CODE P0420 Catalyst Efficiency Below Threshold Bank 1 SENSOR 2 ON 1.6L HYUNDAI ACCENT VELOSITER ENGINE BUT SAME PROCEDURE ON ALMOST EVERY CAR OR TRUCK MADE.
*******ORDER PART HERE.....amzn.to/3UokLVx
If you're experiencing issues with your Hyundai Catalyst, be sure to watch this video. I'll show you how to diagnose and repair the P0420 code, so you can get back on the road quickly and without any problems!
SEE HONDA P0420 CODE VIDEO HERE... • HONDA ACCORD P0420 COD...
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Due to factors beyond the control of GASDIESEL GARAGE, I cannot guarantee against improper use or unauthorized modifications of this information. GASDIESEL GARAGE assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. GASDIESEL GARAGE recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of GASDIESEL GARAGE, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not GASDIESEL GARAGE-SUBSCRIBE-COMMENT AND-LIKE

Пікірлер: 195

@docohm50 3 сағат бұрын

Great video that shows the DIY mech the importance of a good scan tool. I am glad that woman had the good sense to look elsewhere to get her car fixed.

@vernonstones 9 ай бұрын

Appreciate the video. I went to the dealership and my price was quoted at 2500. I was like yeah right in who's world. Thanks for the clarification. I'm pretty savvy with a wrench I'm sure I could do this in a few hours. Thank you for the link for the part as well, wasn't sure what I needed. SUBSCRIBED#

@tonymoore9668 Жыл бұрын

I love the technical aspect of your channel..ty for sharing!

@Elcapulove Жыл бұрын

Good morning family and good health to everyone. Thank you very much for the valuable information and for your time. 👍🏼

@Gasdieselgarage Жыл бұрын

Absolutely my friend

@michaela9199 Жыл бұрын

Common sense mechanicing. Thanks man. Like the music also. Keep it coming. Appreciate the camera work. Wonderd what made cats go bad.

@Gasdieselgarage Жыл бұрын

Unburned fuel kills catalytic converters quickly….meaning spark plugs going bad, fuel pressure regulator problems…

@joelvelez2538 Жыл бұрын

Dude I was tripping for a sec because I was literally listening to the same song. 13:28 “All That She Wants” by Ace of Base while I was working and watching your video lol

@karenbillings1191 Жыл бұрын

This video got me the help I needed without a doubt❤

@hunterhurst6260 Жыл бұрын

Technically sound channel right here.

@chrisstoffregen3451 Жыл бұрын

Dude, great video! Super helpful, replacing the catalytic converter in a couple days on the same engine in a Veloster and this showed me everything I was asking myself about. Well done! 👍

@Gasdieselgarage Жыл бұрын

Awesome bud…glad I can help…it’s why I do these videos 👍

@matanamos12 Жыл бұрын

HI , I have the same problem on my veloster (P0420) , the process is the same on the video ? is the same engine like the accent ? Thank you very much

@fromthesideline6337 2 ай бұрын

Hello! Did you use the same cat that was posted in the description?

@roybristow9233 11 ай бұрын

Sure wish I would’ve watched this before changed mine out, you made that entirely a lot easier

@Gasdieselgarage 11 ай бұрын

Bummer bud ☹️

@franklinthorne5609 Жыл бұрын

I really enjoy your channel GDG!

@ronhagaman7779 10 ай бұрын

You're the man. Thank you

@meganjoy4167 Жыл бұрын

Subscribed to my new favorite channel!!!!!

@Calz3n 8 ай бұрын

Thank you for the tutorial! About to replace mine today

@DoctaMothnips 6 ай бұрын

Just came across UR channel and glad I did. U showed great explanation on this vehicle. I have the same one, but 2012 still the same model tho. But def will swap that part myself when the time comes. No way I'd pay 2k. Anyways awesome video dude👏🏼👍🏼

@Gasdieselgarage 6 ай бұрын

Awesome my friend..ty

@robertcomaduran7944 Жыл бұрын

Doing my catalytic converter today it's may 5 2023 thank u very useful ...

@Gasdieselgarage Жыл бұрын

Good stuff my friend

@bradyfarley1463 5 ай бұрын

The 2017 Accent has a brace/support for the cat attached by two bolts, made access better by removing it. I also pulled the wipers off and removed the plastic cover to have just a little more room.

@Gasdieselgarage 5 ай бұрын

Very true

@matanamos12 Жыл бұрын

Thank you very much for sharing, well explained

@manuelmunoz1104 Жыл бұрын

Great video need to change on Hyundai Santa Fe hopefully goes that easy

@AnakaStar 7 ай бұрын

Thank you so much! Just got my bank 1 redone because the 1st replacement got clogged. Have you done a video on replacing bank 2?

@darneljackson2926 Жыл бұрын

Very well explained po420 video.😮

@dennisseaver7490 Жыл бұрын

Mate you are the truth.

@jerryoneal2395 Жыл бұрын

The wizard of Hyundai lol

@samuelsilvestre39 11 ай бұрын

Great job buddy I have to do the same work for my daughter will hit you up when I do my work to let you know how it went very good and helpful video God Bless

@Gasdieselgarage 11 ай бұрын

Awesome bud god bless

@quietlion33 Жыл бұрын

Thanks for the awesome video 👍

@miketworld 7 ай бұрын

The music helped my mood 👍🏼

@Gasdieselgarage 7 ай бұрын

Awesome

@darwinmonsalve925 Жыл бұрын

Excelente rápido y muy especifico. 🎉

@cannonhotel Жыл бұрын

good to see we all have the same crack in the bumper

@tamirene7752 Жыл бұрын

Thank you. Now I’m sure I can replace it my self for just the cost of the part

@Gasdieselgarage Жыл бұрын

Absolutely my friend

@johngartman9443 Жыл бұрын

Ty for the how to video!

@et784 3 ай бұрын

Thank you so much for the clarification. This is very helpful. Question, what obd do you recommend for noob mechanic like myself 😂 it would be nice to have a video about obds and how to use them.

@daveycrockett9447 Жыл бұрын

Amazing video. I have the same code on a 2008 Hyundai Veracruz. Unfortunately there seems to be even less clearance than what you had on that Accent. Going to be something to get the bad catalytic converter out and install a new one. But your video will help immensely. Thanks for sharing.

@chosen2begreat 3 ай бұрын

Did you ever get it off???

@Gasdieselgarage 3 ай бұрын

@chosen2begreat yes I did

@kyleraines8266 Жыл бұрын

Ty for the help GDG

@chasinghappyxo Ай бұрын

Bro thank you so much for this!!

@jjcs1381 Ай бұрын

This is one of the how to videos. Thank you so much. You are awesome.

@Gasdieselgarage Ай бұрын

Awe thanks my friend

@GabrielMolina-ou6oi 3 ай бұрын

a perfect video!

@jenniferlester4214 Жыл бұрын

Thank you so much!!!

@raymondtremblay7656 8 ай бұрын

Great video. How is that Auto Shack catalytic converter holding up? Has the check engine light stayed off?

@starguard4122 6 ай бұрын

GREAT JOB!!

@notnoel8904 9 ай бұрын

Great vid! How long to do it from first bolt removed to last bolt tightened when finished?

@desktwo7300 Жыл бұрын

Great job

@rodgerwoods9310 Жыл бұрын

Very nice work

@carlossolo9074 Жыл бұрын

Thanks so much you are great

@philcarr7807 Жыл бұрын

awesome video

@DVTOM Жыл бұрын

Was just at Hyundai and made my case that their faulty 2.4L engine from the factory caused the damage. They covered it! $2300

@nioalonso6338 Жыл бұрын

How did you said to the get your catalytic converter covered from the dealership?

@marthymarte1832 Жыл бұрын

Thanks bro, very useful 👌

@Gasdieselgarage Жыл бұрын

Absolutely my friend

@jonathanhartman5997 Жыл бұрын

Lifesaver ty

@DiegoSantos-nz4dd 2 ай бұрын

Hey man! Could you tell me what is the socket size needed for the 9 bolts coming from the manifold.. Ive tried with deep 9mm 10mm 11 mm and i cant get them to grip... I didngot the catalytic from the link you gave us..

@husamalkaifi6500 10 ай бұрын

Hey man I had the same code and I replaced mine with a new one from eBay like you did and it just came back after few miles

@robertcomaduran7944 Жыл бұрын

Dude I watch this video yesterday before I replaced my catalytic converter...dude getting out was hell not taking it of car but literally removing it pass the engine wow this thing was hell

@Gasdieselgarage Жыл бұрын

I feel your pain my friend

@DrJ805 27 күн бұрын

Awesome video

@soothethesound9944 Жыл бұрын

I am literally getting ready to replace mines. It’s been out for months the prices are a bit much. So I’m looking into it myself. I have the exact car

@Gasdieselgarage Жыл бұрын

Awesome my friend

@flyer301301 8 ай бұрын

Thank you btw

@jardoku 3 ай бұрын

Thanks bro 😊

@MostDopeCritic 10 ай бұрын

I did the same thing but I removed the bolts from the engine support from top an bottom to give it some space

@josephjoubert3835 Жыл бұрын

Do you think this Will fit a 2017 Hyundai accent SE ?

@nathanjansen4523 3 ай бұрын

I checked the link to this part and I have a 2014 Hyundai Azera…the closest thing I could find to my car in the part was a Hyundai Sonata cat. You think that would be compatible with my Azera? They are very similar cars

@frankdillon6127 Жыл бұрын

would codes pop up before the P-0420 showing issues that would cause a problem to the cat. if you ignore those warning codes you pay the price by plugging the cat right?

@RicardoHarris 10 ай бұрын

Whats PIDS did you use to see the graph?

@juliochavez7075 Жыл бұрын

Thanks for the video. This will help me get mine done. I hope the cat company is sending you some money for that free advertising.

@BroSaphine84 Ай бұрын

How on earth did you get those bolts out from the flex pipe without dropping the crossmember? I’ve been struggling for HOURS to get the crossmember down so I can have hand room to get to the bolts on that flex pipe (which are hella rusted😣) I’ve connected many extension bars to try and move along the pipe but it’s not working.

@JorgeGarcia-rg2lg 10 ай бұрын

Excellent video. Just wondering if this part would pass smog inspection in California. Part is well hidden so visual inspection I guess would be ok.

@danram247 6 ай бұрын

That's what I was thinking... because they won't ship it to you if you live in California or it will say non CARB compliant for CA. And if you live in a state that doesn't have strict smog restrictions the catalytic converter is still cheap if you buy it at the Hyundai Dealership like $300 compared to California which would be over $2,000

@SierraForeTweny 10 ай бұрын

the exhaust manifold is intimidating asf to me lol was it tough taking all those rusty bolt off ? did you use heat n shi or wha

@ronbocklage7245 Жыл бұрын

How did the Cat hold up? Any difference in how it reads?

@bryankellum4090 Жыл бұрын

Is this the same process on a Hyundai Tuscan?

@jacktripper6124 Жыл бұрын

Super tech

@SannerDM 17 күн бұрын

What this new Cat you got from Amazon E.P.A. or C.A.R.B. compliant?

@cesarpenailillo6627 Ай бұрын

I live in California. G ot the code for our 2015 Kia Rio EX. Did not quote a dealership. However a Mechanic shop is charging $2.218.00 for the work. Including the replacement of two oxigen Sensors

@cesarpenailillo6627 Ай бұрын

I passed emissions by using the gallon of Lacquer Thinner. Sure code will comeback. It has been off for a while

@steved8714 Жыл бұрын

12:35 it's important to note that's a 7/8 not a 7/16.

@emanuelrivera1185 10 ай бұрын

Is that the only cat it has or does it have 2 catalys ? ( one in the middle of the exaust ) a mecanic said it has 2 🤔😕

@heathercurley4912 4 күн бұрын

I'm trying to find one for a 2016 Hyundai Tucson Sport 1.6 T. The dealership is trying to charge me $3500, and I can't afford it. I'm trying to find one that fits. Got the engine replaced. Two days later engine light turns on and the m echanics at the dealership said catalytic converter needs to be replaced again. Used cataclean and engine light turned off for 3 days but turned back on. It runs fine and all just don't know. Need help on what I should do

@clyles511 10 ай бұрын

Is the o2 sensor downstream or upstream on the catalytic converter? I need to replace mine and your video is very helpful

@Gasdieselgarage 10 ай бұрын

Rule of thumb….the upstream will be position before the CAT and downstream will be position after CAT

@danram247 6 ай бұрын

Is that car from California? Or NY? Because Dealer Catalytic converters are usually that expensive in those states because of strict smog regulations. Other states even if you get it from the Dealership it's way cheaper...

@Dave-hk3xf Жыл бұрын

I don't see the link where you got it from do you still have it

@hamzalamborghini1941 Жыл бұрын

There is a way to clean the old one ?

@binofromdawick Жыл бұрын

Is it still running good after change ?

@tropicalautovlog8108 Жыл бұрын

How is the auto shack cat holding up? I am reading some reviews of it only lasting a couple of months before code comes back

@gengisanimal1047 4 ай бұрын

I bought a cat off of eBay for 150$ I’m gonna assume they’re the same quality and yea it lasted me about 2-3 months and now I have to change it again

@taneesescu Жыл бұрын

how did you remove the bolt connecting flex to back of cat? that thing is on there tough. I really don't want to take the flex pipe off since I have no car and no gasket to replace it.

@jtugfestiva 10 ай бұрын

Best to use a impact gun. A racthet is tough to use.

@joshdiaz5451 Жыл бұрын

This video was so thorough. I have a 2016 accent that’s spurting when I’m stopped at a light.. and whenever I get to 20 mph it spurts or struggles to pick up power. I put in some cataclean and it subsided for a few days but then came back.. I’m also getting that catalyst code.. I’m going to order a cat and do the job myself thanks to this video.

@joshdiaz5451 Жыл бұрын

Part ordered but I do have one question if you’re willing to answer. How do I know that I don’t need to order the part that the catalytic converter/manifold flange hooks up to.. 16:07 you’ll see the part that I’m talking about.

@danielesposito5045 Жыл бұрын

Do a valve clean and engine flush, then replace the spark plugs. I was having similar issues and now my car runs like new but still have 420 code so might need to replace cat

@b-ranthatway8066 2 ай бұрын

A little over 5 minutes in and I have the same code, but I'm losing motor oil and there are no outside leaks indicating a crack or anything. 😅 Someone said that it was a seal around my engine thats going bad and causing my catalytic converter to get hit by oil. I have no idea what I need to do right now because my engine is now starting to stutter from time to time. 😢

@Gasdieselgarage 2 ай бұрын

Check your spark plugs ….if they are oil soaked or burned up….you most likely have piston rings getting oil bliw bye…

@tylerwoodall8312 8 ай бұрын

Hey man, appreciate the video. I replaced my catalytic converter on my 14 Accent a while ago, probably 40,000 miles ago. I no longer had the original issues I was experiencing. And I did clear the code. However, the code ended up coming back after a few days. Any advice on next steps?

@GorillaNipples87 6 ай бұрын

Did you also replace the O2 sensors? Typically have to replace both of those at the same time.

@gregstratman9042 6 ай бұрын

Did your car shake real bad and stall?

@panuck5524 10 ай бұрын

Where do you get that catalytic converter, great video

@Gasdieselgarage 10 ай бұрын

I believe there is a link in the video description…. If not I can help you

@SerperiorGaming 8 ай бұрын

Saw that 5 people on Amazon report that this part failed on them. How is it holding up for you?

@stevewaudby5320 Жыл бұрын

up stream and down stream 02 sensors are NOT suppose to look alike on the graph!!!! up stream should move up and down. The down stream sensor should be mostly flat lined.

@rickybailey7123 8 ай бұрын

This is correct

@docohm50 3 сағат бұрын

Maybe he displayed downstream on top and upstream on bottom? I would have liked to see the short and long term fuel trims and an injector test. It was a good fix, but what caused it?

@uptowntravuptownlife3722 Жыл бұрын

Any help on one that will get sent to California? And what is the difference between the ones that California will need to put in?

@michaelsingleton2442 Жыл бұрын

About 800 bucks

@victormcconnell4028 7 ай бұрын

Time of job start to finish would also be helpful

@Gasdieselgarage 7 ай бұрын

Honestly 1.5 hours….not long at all

@fakecellist Жыл бұрын

Thanks for the video. What was the cause of the cat failure for your friend? My accent keeps burning engine oil which basically destroyed the cat. While I am willing to try installing a new cat, I am afraid my engine burning the engine oil will melt the cat again… not to mention hyundai and kia cars are notorious for burning engine oil…

@taylormoran8260 Жыл бұрын

I would love an answer for this because my accent is doing the same thing!

@christinayoung1223 Жыл бұрын

I have 2017 accent burning oil an messed up cat and today it got so bad it was wanting to cut off at stops an sluggish when take off and would bearly do 60 with the peddle pushed to the floor

@SierraForeTweny 10 ай бұрын

do an engine oil flush if you havent already, clean your intake valves and fuel injectors (the GDi engines intakes get clogged with carbon from the combustion proccess) your car will run smoother at lower rpms which will in turn slow the oil consumption. never underestimate the power of frequent oil changes along with preventive maintenance

@bryanlopez4629 7 ай бұрын

@@christinayoung1223 My 2016 is doing the same thing. Did you find the problem?

@blu42nj Жыл бұрын

On the heat shield, where the O2 is, I cut a slit so if I have to replace it again, I don't have to take the shield off.

@jethzeeltorres9727 Жыл бұрын

👍🏼

@jethzeeltorres9727 Жыл бұрын

So do you know if the check engine came back on? Because you do know , you have to wait a certain driving time or milage for the computer to let you know if the code still persists.

@tropicalautovlog8108 Жыл бұрын

I see some bad reviews saying this inexpensive cat only lasted a month.

@jorgeandresriosgarcia1548 5 ай бұрын

Did anyone have smoke coming out from the o2sensor?

@TheLord2024 2 ай бұрын

Hey bro you have any other recommendations for this part since the one on your link is not available now

@Gasdieselgarage 2 ай бұрын

You need a cat converter?

@Gasdieselgarage 2 ай бұрын

What year and model of your Hyundai

@TheLord2024 2 ай бұрын

@@Gasdieselgarage accent 2016 se

@Gasdieselgarage 2 ай бұрын

@@TheLord2024 this should work amzn.to/4boVxiB

@TheLord2024 2 ай бұрын

@@Gasdieselgarage I appreciate it

@SSJDMS 3 ай бұрын

Do you have still that car ,any problem after doing it later months And what cat should I pick when car say both epa and carb compliance? 2017 Hyundai accent 1.6

@Gasdieselgarage 3 ай бұрын

It’s still doing great….when it says that epa compliant stuff it’s usually pertains to California emissions…so yes you can put the one like I have on

@SSJDMS 3 ай бұрын

@@Gasdieselgarage thanks for your reply And should I check for vacuum leak before changing cat that may be triggered cat code What do you say

@user-yu4yd1vw5n 4 ай бұрын

Will a catalytic converter cause my my 2017 hyundai elantra se not to start? The dealership trying to charge 3900

@gengisanimal1047 4 ай бұрын

A cat can cause you’re car not to start, not to car savvy but researched into it, went to a shop and had them change it so paid just labor and they told me they had an Audi come in and it wouldn’t even start because of the cat

@phildoken Жыл бұрын

No torque specs for the install of bolts and what not

@hamzalamborghini1228 8 ай бұрын

Is this legal in California?

@uberkill160 Жыл бұрын

I also have a 2014 Hyundai Accent putting up the P0420 fault code. The mechanic told me that, because the catalytic converter is CARB (California) compliant, the internal computer won't allow a non CARB compliant converter to be installed, and is wanting to charge me $3000 to replace it. Is there any truth to this?

@Gasdieselgarage Жыл бұрын

Well unfortunately California has SMOG compliance tests every year if I’m not mistaken. Technically I don’t believe it would make a difference but passing the smog tests I can’t be 100% sure on that. Now for your question….the converter it’s self should not make any difference on what the cars computer is reading…I call BS on that 3000 dollars to replace…..the only difference between a California compliant cat and a regular cat is that they are made differently. But shouldn’t mess you cars ecu up.

@jhonnyboy1920 Жыл бұрын

Is that catalytic converter good for California?

@Gasdieselgarage Жыл бұрын

Yes I don’t see why not.

@RedCapMusik 7 ай бұрын

What would cause the manifold to get red hot. 2020 elantra 2.0

@Gasdieselgarage 7 ай бұрын

The catalytic converter is just likely clogged because so much Unburned fuel is dumping into the manifold/CAT basically causing a fire inside the manifold.

@RedCapMusik 7 ай бұрын

@Gasdieselgarage what would cause this, and any advice on a fix. Not one code. No CEL. Dealership says cats not under warranty. But recall on piston rings. I was thinking burning oil clogging it... just noticed first time last week after smelling a burn smell after long hwy drive

@Gasdieselgarage 7 ай бұрын

@@RedCapMusik well if you do have a piston ring problem then yes most likely you are getting unwanted oil and fuel blow bye into your exhaust…I can see the manifold getting hot with that scenario. Sorry to hear that….if you are able I’d pull the spark plugs out and look at their condition….if they look like charcoal then you really do have a problem

@Gasdieselgarage 7 ай бұрын

@@RedCapMusik does your oil level seem off?

@RedCapMusik 7 ай бұрын

@Gasdieselgarage I was actually topping it up when I had a Fram oil filter. Shop put on. I changed it and since have had no issues as far as losing oil. I pulled the plugs last week. They didn't look to to bad. A little black but no soaked. It was after this I noticed the manifold being red hot. Not sure if that could have caused it or just that I happened to catch the glowing after I did this Was considering replacing with new ones as I feel maybe spark not strong enough thus allowing unburnt fuel into exhaust. They (Dealer) say the stock plugs are good to 100k. But I doubt that.

@rodriguez9497 5 ай бұрын

Is your cat converter still holong up ?

@Gasdieselgarage 5 ай бұрын

Yes absolutely

@swurtz060506 7 ай бұрын

I replaced my catalytic converter, both o2 sensors, pcv valve, spark plugs, and coil packs at the same time. In 3 weeks the code came back. Any ideas?

@Gasdieselgarage 7 ай бұрын

Fuel pressure regulator may be acting up…dumping more fuel through the exhaust causing codes and also leaking injectors but that’s hard to diag unless you bench test the injectors not on the engine….you may be running into a “running rich” issue but you won’t notice unless you have a computer to read the o2 sensor output or smell strong fuel odors.