Can Cataclean really fix a catalytic converter / P0420 / P0430 error code

Does Cataclean really fix a P0420 / P0430 error code and catalytic converter. Cataclean Link: amzn.to/33t8RVQ
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If you have a catalytic converter issue give this a try before replacing the catalytic converter for low efficiency and potentially save a few hundred dollars.
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Video is for entertainment purposes only. Seek a qualified mechanic for all automotive repairs.
*Disclaimer
We, Mountain Man Mo, are not responsible for property damage or injury incurred as a result of any of the information contained in this video. Information given in this video does not guarantee the desired outcome. Any injury, damage or loss that may result from improper use of the tools, equipment, or the information contained in this video is the sole responsibility of the user and not Mountain Man Mo.

[@jorgemendez8372]

So I used it on my 2008 Nissan Sentra 2.0 a few hrs ago. Poured it at 1/4 tank of gas then drove at least 14-17 miles as instructed. Refueled and drove back. Stopped by to get something to eat and an HR later I turned my car on and the check engine light didn't come on anymore. 😁

[@yxngjxna1024]

What about now?? Any updates??

[@s2wheels]

I used it like the instructions said. I ended up having to replace. Half of my exhaust system. That quick fix in a bottle. Might get you by for a short time. Better off fixing the actual problem. 30bucs well wasted.

[@ravenXcozmo]

You still have to take it off and pressure wash it

[@C7Tmac]

update ???

[@periii86]

Sounds like a relief haha :) glad it worked

[@Crypt0Crossf1re]

Thanks for the video! This tottaly helps I/m going to have to give this a try to get my issue resolved!

[@maycrew9126]

My fleet is all high mileage vehicles and I now use this actually every year after it cleared a p420 code from my sons Ridgeline. We also notice a slight bump up in fuel economy for a while after use.

[@GeoCog]

I tried this on my 2010 camaro,was very skeptical and didn't really feel like wasting almost $30 on a product that had very mixed reviews,anyways still went ahead and bought it,followed the instructions and didn't feel that much of a difference at first so I figured hey I just lost $30 lol The next day I'm driving just minding my business and boom the check engine light turned off 😳 I couldn't believe that this product actually worked,I'm definitely going to start using every 6 months

[@ashleighroyster1999]

Did you have any other codes when you did this? I might need to do this to mine as well.

[@shmurk951dabz]

@@ashleighroyster1999 what other codes u have?

[@shamancredible8632]

I'm about 99.9% sure that check engine lights do not turn off by themselves, even if the problem is fixed. You might want to make sure that the light itself is still working.

[@briansutton7764]

​@@shamancredible8632 Codes will clear themselves when the problem is rectified. It may take awhile though. It could take anywhere from 3 to 30 engine start stop cycles. But yes the computer will clear itself eventually.

[@gamingwithsupermanrr9150]

@@shamancredible8632 they automatically turn of if the issue was resolved, The computer is set to read all codes every trip or other trip. I’ve been in cars that need 5-10 trips to read all codes. Once the codes read again and it sees no issues then it will reset. If the lights on during the reset then the light will shut off. Indicating that it’s fix or all codes are ready fine

[@jesseruiz2337]

It works if u have some crap like coolant or some build up. I had a cat code on my Range Rover, I put this stuff in it after making sure there were no leaks in the exhaust, no 02 sensor codes and the code never came back. It's good to use this twice a year on your car.

[@illescasf]

Thank you for the comment. I have a 08 Range Rover HSE w 420 and 430 codes. Just bought Cataclean and will use as soon as the tank gets to 1/4 tank.

[@bizb8742]

Correct. It will clean up contamination on the cat or O2 sensors if the source of that contamination is addressed. I had antifreeze contamination from a small leak in the head gasket. Once that was fixed, the code would not clear off since antifreeze had coated the components. This will clean off residue and clear the CEL.

[@jorgepinto8585]

This product is gold saved me bank and my Lincoln is running smoothly again

[@HanioZuniga]

This is awesome. I'm going to try this as well. Have a car that hasn't been driven in 16 months due to an accident and now I have check engine light with the same code. Saw a video from Scotty to use Lacquer Thinner, but I'm not comfortable with that. Will update you

[@adamb84]

Don't use Lacquer thinner as it will break up the carbon deposits in your engine and could get stuck in the variable valve timing system, in Honda's its called VTEC or VTC or VVT. I used it twice last year and although the process worked for me and my egine code P0420 went away, I almost destroyed my engine. Cataclean is a much safer option. You can also used that more than once in your gas tank, I used it twice in a row. I'm about to use it again, also once your catalytic converter is clean and running good again, use the Cataclean every 3 months to keep your catalytic converter happy.

[@latanyapatterson6980]

Thank You so much for showing.

[@billschumann6503]

Omg this stuff works . Cleared code after an hour of using. 2015 Subaru 145000 miles.

[@MountainManMo]

I am glad that it was able to help. Subscribe if you enjoy easy to follow DIY repairs and product testing.

[@diytom3448]

Someone at a store suggested this to me after code started. Put in gas tank n one day later no issues. Thanks for video.

[@Sizorhandz]

I thought this stuff was going to be the definition of snake oil when i first tried it. I followed the instructions cleared the code before putting it in my tank. Drove for about an hour and Out of nowhere my engine light dissapeared. even felt a slight sputter in my fuel system when it happened was kind of weird but saved me $1,200. My last test the Cataclean did not work right away but i used Octane Boost after as well as some Marvel Mystery Oil and after a few days my system was Clean. My Cat was changed 6 years ago may be an 02 sensor or on the way out but again i would try this and from experience other additives are helpful as well.

[@1wadesdad]

Sizorhandz, You said you cleared the code (which would have turned off the light), then as you were driving, the light turned off. Care to edit your comment?

[@personasinnombre6975]

Came here to ask the same question, doesn't make sense

[@illanatodd8766]

i just used this stuff last night and it worked amazingly!! my 2015 ford focus came up with a P0420 code, so i went and bought the cata cleaner from my autozone and my check engine light was gone when i woke up the next morning. The best part about everything, is that because I have a capless gas tank, my first attempt using this resulted in half the bottle spilling out onto the ground, yet the product still worked for me. Although, since I wasted half a bottle, I will be going back to the store to do another half treatment. However, it doesn’t seem entirely necessary because it worked that great the first time!! (Note: if you also have a capless gas tank, you might find the buttons to release the opening on either side of the hole. i used a screwdriver to push them in, and then had a funnel ready to hold the hole open and pour the product straight in)

[@patroklosana8692]

"do another half treatment" I laughed hard at this :) Thank you buddy :) I will go and buy the product tomorrow to try it out

[@ygbodybuilder3023]

Update

[@benburnett8109]

@@ygbodybuilder3023 NO update means it did NOT work.

[@roslynlewis2664]

I had PO422 and PO432. I has to used 2 bottles for it work, but the codes cleared and I save $2500 with have to replace the catalytic converters. Definitely worth trying before replacing the cats.

[@WDSC_WOTB]

Thanks for commenting

[@jlovejamie]

Did the check engine light come back on

[@texaslovelylady]

So three times a year after 7 years start using for maintenance of cat.

[@Trunkmonk-lp5pk]

thanks, i have done it once, no change. ill do it again and maybe replace spark plugs too.

[@gabrieldavidcomedy8139]

Replacing? If the liquid doesn't work I'm cutting em off!

[@WillieBeamingYouTubeChannel]

Thank you you saved me hundreds 🙏

[@MountainManMo]

You are welcome! Please subscribe to see money saving DIY repairs.

[@personasinnombre6975]

I just tried this on my 2005 Toyota Corolla a few days ago. My check engine light came on with the code P0420. I found this video and figured I'd give it a try. I poured it in, I had just under a quarter tank. I drove for about 16-17 miles, stopped at a gas station and got gas. When I turned the car back on, the check engine light was off already. It worked so fast, I can't tell you how surprised I was. Still am 🤣 I also feel like I might have better gas mileage than before. The needle doesn't seem to be dropping as fast as it used to 😅

[@imsoooimpresssss4574]

did u erased the code first before you pour cataclean and drive? does it matter if i erase code after it all done or before?

[@user-wx6wt8jh1q]

Did your car have a miss

[@daltongomez647]

Ima give it a try and have 02 camry w same code

[@stasvladimer8071]

At what speed were you driving? Thanks

[@victorteo4783]

I used the Dura Lube, as one bottle treats 16 gallons of fuel. It worked. I did not try Caraclean as I have to keep watching my fuel gauge, and have to travel close to gas station.

[@camodrums]

How was the dura lube?

[@sunshinedayz2172]

This is great.. Thank you👍

[@k0bino]

Still got a CEL but I can definitely feel the difference while driving, my ODB is now showing 8 monitors ready instead of just 6 or 7 before CATACLEAN, gonna run another bottle on the way to work tomorrow and hope for the best 🤞

[@Boylaid]

I wish you luck my friend. My C300 is in the same boat right now lol😂.

[@m3m3z_machine36]

Lmk how to goes, just bought a bottle for my truck.

[@k0bino]

@@m3m3z_machine36 definitely drives better but my CEL light is still there 😰 haha

[@michaelknight1980]

@@k0bino how about now?

[@k0bino]

@@michaelknight1980 still got a light ahaa haha

[@classicsalsa3589]

I used it on my 2006 Nissan Sentra and worked like a charm.

[@sensei9322]

Did the code come back?

[@erickfranklin4675]

hey thanks for the info I'm gonna try it Tomorrow bought it today

[@originalimmigration]

Did you fix it?

[@mattzabel4162]

Worked on my 2012 explorer in a day. Was pleasantly surprised

[@benburnett8109]

Proof?

[@IPodGuyism]

I’m having this same issue with my Kia right now. My car will be low enough fuel tomorrow to use it. Praying it works. Don’t have money for a new cat

[@joselynvillarrealmiranda7450]

Was you Kia driving only 40 miles or less?

[@jonathancardenas5252]

Did this work for you?

[@jacquelinedavis5520]

Is good I used this Friday night as described on the bottle. Drive about 45 miles more after wards, this midnight my check engine is gone. You will need a few more miles of driving after you followed the directions on the bottle. Thanks Sir, thanks everyone sharing on cataclean!

[@hirolla74]

After putting the Cataclean in tank, did you drive highway mileage or local street 45mph mileage? I want to try this but go on highway speeds.

[@jacquelinedavis5520]

@@hirolla74 I drove local normal speed limits. I used mid premium gas, the middle one, I pumped just half my tank only.

[@BeGood2DoGood]

Did the light stay off or did it come back after a few months? Curious about its effectiveness..Thanks.

[@djangoletsgetitgarvey2857]

Works like a champ

[@madelinmartinez1521]

Thank you !!! You saved me so much money !

[@Raptor-7]

Wife❤😊

[@starguard4122]

Glad it worked for you 😎

[@jmorris023]

Didn't work on my "new" used Sequoia, but I didn't realize it was straight-piped until I looked underneath. Dooh!

[@CarlosGarcia-tv4rk]

They stole it?

[@jmorris023]

@@CarlosGarcia-tv4rk I guess at some point they did. Apparently straight piping a cat-less car will make it sound like a normal car. I didn't pick up on the CEL light until I had already bought it. Shady seller. Who knew?

[@rhaediggity925]

Worked for my 2015 Chrysler Town and Country. Car was riding super rough now it's smooth and the light went off.

[@grippingyarnsuk]

I always use it and find a great boost in efficiency and haven’t failed an emissions test yet.

[@lisamyles3790]

So it really worked

[@brushfire395]

Used it twice in my 2000 Subaru, followed directions. It did not solve the PO 420 issue. No other codes. Car still runs great. I feel I wasted over $50.

[@cme135]

Used it, followed the instructions, then drove for one or two more cycles and the code reset on its own, passed emissions the next day. I thought it worked permanently, but P-0420 code came literally later that day. Drove approximately 30 miles before the code came back. I have a Honda pilot with eco mode which burns oil like crazy. Technically it worked but didn’t last too long.

[@MountainManMo]

check the PCV valve that may help reduce the oil burning if it is stuck. The oil will cause issues with the catalytic converter.

[@cme135]

@@MountainManMo I changed the PCV valve too. the only time it helps is when I clean or change the bank 1 spark plugs. I bought it used in 2019, first yr was fine, then started getting MIL for spark plugs, then the dreaded P0420 about 18 month of ownership. I even tried a bypass for eco-mode which worked for about 3500 miles. Last ditch is to change valve and spark plug covers, but really wonder if it's when eco mode kicks in...no longer get a MIL for spark plugs, just emissions. It's a 4x4 so it's a pain to access O2 sensors...

[@fordhalsey89]

Sometimes it will fix your P0420 catalytic converter below efficiency CEL.. but an extender in the farthest downstream O2 bung will always make that light go away. If your parts store doesn't have them or won't volunteer the information you can always ask for a spark plug non fouler and then drill it out to fit your O2 sensor. Usually a 1/2" drill bit.. just make sure you stay out of the internal threads with your bit. And then remove the old downstream sensor and install this and then install your sensor in this. You're adding oxygen. Your upstream sensor provides fuel trim but your downstream just tests how effective the catalyst is. So this morning when I seen the CEL I pulled out my tester, plugged in, and found catalyst below efficiency. So eventually I'll replace the cat with a universal at an exhaust shop.. some people straight pipe them... but the cat is actually part of your quiet exhaust. So I probably wouldn't go for it. My truck is loud enough like it is with a glass pack. I'll spend those pennies on a governor transducer and solenoid and dual solenoid TCC and OD while I have the pan off..I guess readjust the bands or take it to my favorite transmission shop (they actually fix and not just replace!)..I just need a 60 deg day. Until then I will just drive it gently. So anyway if you try cataclean follow the instructions! Don't just add it like a treatment on a full tank. Some people will drop their exhaust and soak in soap and water or lacquer thinner... this and that..I wouldn't.. that's pretty labor intensive and sometimes that method doesn't work either. Oh...it sometimes will also fix P0430... that's bank 2 if you have a bank 2.

[@Munthebun]

do you know if having an o2 sensor extender (or spark plug nonfouler) will make your car fail an emissions test?

[@MountainManMo]

If this is found it would fail emissions in most states and is considered illegal in several states. They do prevent the code from being displaced and may result in worse fuel economy. If the catalytic converter becomes very fouled it will make the car sluggish and difficult to accelerate as the engine exhaust will become restricted in the catalytic converter.

[@johnobrien6052]

I tried the extender on my '17 Chevy Z71, after replacing the cats and all o2' s, plugs and wires... Still got the light, with po430 coming back. Injectors are good, clean and physically flow equally, compression is within 2lbs across all 8 holes.... Traced Os wiring and checked ohms, ect on each 02...I'm gonna try cataclean and if that doesn't work, I'm pulling it off the road and making a race truck with a blown big block!!!

[@shane250]

@@johnobrien6052 You probably used the straight extender instead of the 90⁰ one. I had the exact same problem as you, switched to a 90⁰ extender (anti-fouler). That was 6 years ago, and the code never came back.

[@pyronitro]

speaking from experience, cataclean can work depending on the issue you have in your car. fix all the issues thats causing the P0420 first or it will not work. use it as the last step. sometimes you need multiple 15mins. sometimes you need to use more than a bottle. if the cat has been dead for a while it may not get fixed. but if its the first time you got the code then it most likely will work. after you fixed the underlying issue.

[@pyronitro]

They also sell 3 liter for $33 And 5 liter for $50 when i bought around jan 2022. Much more economical.

[@hamzababli678]

I have mine gives the code for more then 3 months but everything else has been taken care of. Plus every and each time I use that cleaner the light goes away for a day or two then it comes back on. Do you think I have to use it again? Any suggestions?

[@pyronitro]

@@hamzababli678 a catalytic is not just a air cleaner, its also a O2 storage device. what the ECU measures is not just the changing of the O2 sensor voltage but also the time it takes to change from the first O2 to the 2nd O2. if you can remove the code by running the cleaner then you are at the borderline of its lowest limits. at this point it will be sensitive to the kind of oil and the kind of gas you use. if your car is burning oil, then it will further deteriorate the catalytic. cleaning with the cleaner is just keeping things at bay. so i suspect there is still some issue you have to fix. all this assumes you still have original OEM catalytic. aftermarket catalytic are not as good as OEM. in my case, the engines has been burning oil for more than 100k mi. i took care of that with piston ring replacement, and even tho my cars are at the borderline, the code hasn't come back yet. i have 4 cars like this. good luck! oh i forgot to mention. a generic code reader will not show you the O2 storage reading. you need a OEM software to do that.

[@mikesecondo2254]

@@hamzababli678 yeah....this crap you people in bottle is a complete waste of money....it's called "gimmick in a bottle" now fix it the correct way!!!

[@mikesecondo2254]

OMG!!!the placebo affect strikes again!!!! Love to read these miracle stories about these over priced gimmick in a bottle testimony. Great for a laugh!!!!!!!!!

[@tiennghe7143]

Good job

[@irisbaez1972]

Can I put a gallon of lacquer thinner and just go to my work 26 miles, then come back home for a week to keep clean? Or is better to remove the sensor and spray inside the catalytic converter with throttle body cleaner and leave it to seat there for 24 hours, then run at high speed?

[@Mustangdad2015]

Thank you for this

[@MountainManMo]

Any time

[@jordangouveia1863]

It did for me. My car has a brand new sticker good for the next 2 years! If the honeycomb inside the CAT is broken then this will not help. If it's clogged from a blown head gasket for example it will likely work. In the old days of carburetors, spraying a can of carb cleaner into the carb while holding a high rev would do the same thing for the CAT but it smelled like rotten eggs and smoked like crazy!!

[@MountainManMo]

I have my fingers crossed as this will be the 4th year using this to avoid replacing the catalytic converter. I may finally have to change it out.

[@omerback007]

I don't have a code on my maxima 11 but the exhaust seems louder than others and there is a bit of loss of power.. I'm planning on first cleaning the throttle body, changing the sparks, changing PCV and hoses, and then finally I will use this.. trying to renew the car completely. The cars driven about a 170k miles.

[@benburnett8109]

How did your waste of time and money turn out?

[@omerback007]

@@benburnett8109 expensive

[@aaronirizarry979]

I used a blend of seafoam high mileage, seafoam injector cleaner and did 2 bottles of cata clean to 9 gal of gas in my 08 mazda.. p0420 and p0421 gone passed CA smog.. i cleared the codes and waited for all the sensors to be ready ... been driving for a week still no codes 🎉🎉🎉

[@jwat3217]

Update??

[@aaronirizarry979]

@@jwat3217 it stayed off for 3 weeks and came back on.. but there is a difference when I clear the check engine light it stays off much longer now and allows me to pass smog.. im gonna need a catalytic converter eventually but the car runs great and don't stink or nothing so ima see if it'll pass in 18 months..

[@showcivicred]

Great video! I have a 2019 promaster i use for expediting for work and it threw the 0420 code. Grabbed a bottle of this and grabbed four sensors just to have them in case one of them fails down the road. I noticed after driving around and putting this in the van does not seem zlightly sluggish like it was when the light went on. I also have that same code reader but it is the harbor freight brand. Exact same one. Deleted the code just like you do and have not drove enough yet to put it back on and check to see if the permanent code has cleared yet. Hopefully I get lucky like you do and I can just take the four sensors back as well.

[@MountainManMo]

Good luck, typically I drive for 50-150 miles for the code to go off on its own so no need for the code reader. The sluggishness was when the exhaust gases were unable to exit through the catalytic converter and as it is cleaned you should have better performance.

[@kd9183]

Did it end up working ?

[@showcivicred]

@@kd9183 for about 3 k miles then nope. i ended up replacing the converter.

[@kd9183]

@@showcivicred how much is it to replace the converter ?

[@weltonhoward4053]

I just put it in my Subaru Outback 2008 & so far so good. It runs better and hopefully I won't see the dreaded light again.

[@reboot110]

Any updates, have an 09 I’m thinking about trying it on

[@jwat3217]

Update?

[@perryquinn709]

I used it on an old Honda suv, it really works well, just follow the directions.

[@sendasantiguasgiddings]

I had to do 2 cans for an 08 Jeep, seems ok now, going to run 93 oct for awhile to see if that helps too

[@bwatkins1223]

I've used this on an '05 Cadillac Deville, and I was skeptical. It actually worked. I used it on a low fuel tank and dove the crap out of it. The light never came back, and eventually, I sold the car. I don't think it's complete snake oil it does seem to have some benefits. It's all relevant, though. With that code, it could be numerous things.

[@MountainManMo]

It works around 60-80% of the time after around 100-200 miles and only for a few weeks to a couple months when the light first comes on. It works less often if the light has been on for a while as in my case now after three years of avoiding changing the catalytic converter for inspections and only for a couple of weeks at this point.

[@1349nero]

It does work!

[@trailblaza247]

had to use two bottles but we did it boys!

[@thomyalonzo168]

Is that even safe 😂😂😂

[@michaelbarner7458]

I used this product for the first time today it didn't clear the code but I can definitely tell the difference in the performance of my vehicle I'm going to try a second bottle in the near future and see if that takes care of the code I know my vehicle is running a lot better better gas mileage is a plus

[@thedbcooperforum]

If the cat is in bad shape it will never work and needs to be replaced. It will work with cats in good condition and not driven with codes for long periods..

[@jesustamez9047]

Did the second bottle Work?

[@mahed82]

It's works?

[@cturner828]

Does this help if the problem is coming from a bad downstream sensor?

[@MartinX192]

I had 'catalyst efficiency below threshold code' for 6 years ran a similar product codes been off for 4 months now

[@dennyklein1965]

I’d only use this within the month of needing to pass smog to re-register the vehicle. That way it’s not a rush rush to do a full fix.

[@robertgiguere875]

Have a 2007 M35x infinity with 200,000 miles that showed that code. Mechanic told me it was an $1800 repair to replace converter. Used Cataclean. That was 3,000+ miles ago, and check engine light has remained off!

[@jwat3217]

Update?

[@camodrums]

Update?

[@rogerblack4603]

Update?

[@ahyungrocks5509]

$1800 is cheap. For my Honda (3 converters), they are over $6000 just for parts.

[@HungryH1951]

Even if you had to use it once or twice a year to keep it clean that beats paying $1800 to replace the cat conv. If you used it twice a year that would be $600 over a ten year period. Sounds good to me.

[@Fc9ers]

it worked. i poured the whole bottle with 1/4 of a gas tank left. drove 20 miles then pumped a full tank of gas. engine light cleared after 40miles. bottles says to use 2-4 times a year. This is the first time my car has gotten this p0420 code and bottle does state this is dependent on the condition of car and driving habits. So im thinking this will work if the catalytic converter is just starting to fail.

[@jameslafevers6048]

p0420 is a permanent code and you can't technically erase it but you can make the light go off. Most new cars have to drive about 250 miles and have 40 cold starts to get up to operating temp before the code will go away. Just a warning. You can also take the cat off an clean it out and it can work. The mesh filters can get clogged up with garbage.

[@daveyt4802]

Unhook the battery for 1 minute?

[@stevesmith756]

@@daveyt4802the code will still show up on a OBD 2 reader. And the light will come back on

[@winstonwong3326]

Clear the code then just unhook the battery and wait 39 seconds. Rehook up the battery and go.

[@stevesmith756]

@@winstonwong3326 the code comes back after the computer ECU resets in about 100 miles. In Ca they will hook up a scan tool and it will show the ECU is not reset and you will not pass smog. Not that simple as disconnecting the battery

[@mysteriousoklahoma777]

Yes, it works…tried it last month

[@stantheman9969]

I put 1 gallon of paint thinner in a half full tank … 1978 280z ….. gross polluter when I bought it …. Passed right after I did that … no bs

[@suzannasmogoleski6411]

I wonder if this would work on my equinox? These cars are something else!!

[@itsnitz0575]

Wondering the same thing for my 2.4 nox with p0420

[@domino6350]

Same, I've gone through 2 cats in 2 years and no one can tell me what's clogging them.

[@michellemarcum8059]

Let me know if it worked for y’all

[@Artgrinder40]

Tried this on 2008 gmc canyon with 1/4 tank full. Drove it for about 15 mins and then did seafoam in air intake. Check engine light with PO code is gone! Saved 2,600.00 which was estimate for new cat and oxygen sensors.

[@MountainManMo]

Thank you for sharing. Make sure to correct the issue fouling it such as unburnt fuel or excessive oil burning to avoid the code coming back. (stuck PCV valve, old spark plugs, bad coil pack, miss fire, etc.)

[@Artgrinder40]

@@MountainManMo so currently the scanner is indicating that the EVAP system is not ready. Any idea what this could be?

[@kimberlywilliams2094]

Will this work for 2018 Hyundai Elantra. My engine light just came on with the same code?

[@lindariley7542]

Next day started up light was gone it work for me

[@jasonjordan6550]

Cataclean does wonders for my car

[@cesarpenailillo6627]

I will try this on our 2015 Kia Rio

[@clarkgriswold-zr5sb]

Two cans in a 2014 Q50. No improvement. Was skeptical, but had to try before I started buying expensive parts.

[@adonnisblac5663]

Bought the cata clean used it on my 2015 rogue select, followed all the instructions and still had the signal…looks like I’ll have to rob a bank to fix it lol

[@hamzababli678]

My converter reads 25 and it should read 55. Does this Cataclean works in this or what should I do

[@Gregg0112]

Your converter doesn’t loose efficiency because of mileage. You could have exhaust leaks that have o2 sensor thinking the converter isn’t scrubbing the exhaust gasses or you could have an engine that’s fuel trims are out of control causing fuel contamination or overheating the converter because of a lean condition. Another issue is an engine that consumes coolant or oil putting a jacket of contamination on the converter media. Then a product like cataclean helps to clean the media so the chemical reaction can happen

[@dex.cameron1855]

Well, it took about 3 days but it cleaned my system and the codes cleared 😁

[@JackMoveShawty]

I tried this on a 03 Bravada. I thought I didn't follow the instructions correctly so I tried it a second time. I know I can't get it wrong twice. If the cat is bad, cleaning it won't help or at least it didn't help in my case. Just ended up replacing the cat instead of dumping money into a cleaner that's going to be hit or miss

[@MountainManMo]

It is a temporary fix to pass emissions and / or get some engine power back and buy some time. Even if you replace the Cat you will want to fix the real issue causing the failure and fouling up the O2 and Cat. I have seen a lot of cars consuming / burning oil due to carbon build up/low tension piston rings/stuck PCV valves or just incomplete combustion with dirty fuel injectors old spark plugs etc. Most manufactures recommend some fuel cleaning additive a couple of times per year such as Techron ( amzn.to/3Yl3orA ) or similar products. The PCV valve is quick and inexpensive to replace yourself how to replace a PCV valve video kzbin.info/www/bejne/goPdqGWnmdObZqc

[@eddgiles]

was your CAT loud or did you just get the check engine light ??

[@randyheath8566]

I'm going to try this on my 2005 Cadillac SRX

[@ksmith3116]

Ever get a chance to try it?

[@tmtruett]

Is it necessary to clear the code yourself prior to using or should the light go off on its own if it's a success?

[@MountainManMo]

The light will go off on its own if it works. I have used this a few times and the light goes off around 100 - 150 miles of driving over a couple of days. This will be a temporary solution that may work for a few months and then be needed again. My piston rings and PCV vale are likely causes of extra oil burning which causes the O2 sensors and Catalytic converter to become fouled. I just changed out the PCV valve and will need to change out the low tension piston rings to stop the carbon build up otherwise this will just keep happening. I am attempting to get another year or two out of the car before buying a new one.

[@jett-rampartflyer2852]

If you open a bottle of CataClean & smell it, it smells exactly like acetone. I have had it work, and it will work, if the catalyst material isn't all melted/broken/totally clogged/shifted all weird in the chamber.

[@MountainManMo]

I have not smelled it, but it would not surprise me if it was mostly a solvent like acetone or other flammable organic solvent to help break up build up and burn cleaner.

[@SyrusLang]

Used this 2 weeks ago for code p0420. It went off and worked for about 500 miles or so. Now it's back on for the last 2 days (same code). Not sure to replace the cat or to just clean it or downstream/upstream sensor?

[@Dougarony]

I just bought a 2010 Accord ex-l 2.4. During the test drive there was no check engine lights, of course Now there is, the owner stated it had the same gas in the tank for perhaps 6 months, could old/bad gas cause p0420?

[@blixasice]

I just got the code today. Right after an oil change and replacing the oil drain plug and gasket.

[@berkh588]

literally same

[@esepetesegura]

Did you find what caused the check engine light to come on after your oil change?

[@blixasice]

@@esepetesegura catalytic converter not performing at top level. It barely comes on now. Guess driving cleaned it out

[@darknature79]

I'm gonna try this next and see if it'll work. I just used the rislone brand at just under half tank. Ran that almost all the way out then filled up and drove 210 miles then 210 miles back home and my light never went off. That was after i ordered the O2 socket and both 02 sensors for $100 lol. I fix everything but nothing's ever really fixed.

[@darknature79]

After 2 02 sensors,rislone cleaner and caticlean and then i got seafoam you can spray into the 02 hole and nothing worked,but as i took the 02 sensor out the light was at the right angle for me to see down into it and it was too far gone to save . Got a cheap $100 one off eBay and now my civic has its power back and way more power than before i changed the convertor.

[@Makeitmach]

Will it work if I haven’t got a code but the motor running sluggish

[@baljeetseggzy7746]

i got a 2018 f150 and i got this code, going to try this tomorrow and see if it fixes it!

[@ksmith3116]

How did it go?

[@joselynvillarrealmiranda7450]

My Kia is driving only 40 miles per hour. The mechanic said the ccv was clogged. Would this work in my case

[@craigkeller]

Mercedes set two cat codes, used catyclean, no new codes set in over a year.

[@lr8459]

Yes, it works. A bit pricey, but use it every 3-4 months.

[@MountainManMo]

I have used a few other fuel cleaners that are less expensive including Techron and Lucas oil fuel additives and they have also helped.

[@nickhines1131]

That stuff is like octane boost, it burned up my plugs, and eventually cut my cat off and ran a straight pipe, you can do that in states with no inspection, now it runs great, with new plugs that is.

[@johnwhittington1883]

So I got a 2014 Gmc acadia sle i dont want to get a new part for it if i dont have to but do you think this will work for my catalytic converter? It looks like it's burnt a little bit but I'm not sure

[@MountainManMo]

If there is a hole in the exhaust or broken honey comb in the catalytic converter then it will not help. If there is only fouling / carbon build up then it may help burn off the fouling and clear the code temporarily and will likely need to be used 2-4 times per year until the route cause of the problem is corrected.

[@ollietheboy7107]

Zuks big brother

[@jamesray3920]

I just used CRC Guaranteed To Pass Fuel System Cleaner 12oz And clean my exhaust and code gone it clear the code on its on and im sold on this stuff it works i used this brand on 14 bucks this stuff works

[@MountainManMo]

Most of the fuel and catalytic cleaners will work to clean out some amount of build up. I have used at least 4 different products with varying levels of success.

[@jamesray3920]

I tried it none work even lacquer one gallon so I'm trying a spark plug fouler drill out center so o2 sensor will fit then remove o2 sensor install fouler then o2 sensor this has been first this happened and it's f...king driving me nuts in 2025 tecas no longer doing emissions testing thank god

[@axxiom20001]

Tried on my 2009 Honda Pilot and the same code came back after 3 months. IMO this product doesn't fix the issue - it just masks it. If you Cat Converter is running low on the metals used to treat the exhaust, there is no liquid additive that will "fix" that.

[@emrecan8527]

How often can you use it i got 2017 q7 felt like it worked good but i did like 2k something miles from in two days long journey.Just did the oil change should i use it again?

[@MountainManMo]

I use it two to four times per year or when the light comes back on. You should also figure out what is causing the issue in the first place. My issue is that my engine burns a lot of oil and causes build up in the catalytic converter. I have also replaced my spark plugs and used better gas to reduce the build up, but unless I fix the oil burning issue I will keep needing to clean out the catalytic converter or replace it too often.

[@jamesjeff4952]

Do I need to clear the code before adding cataclean? Or add it before and drive

[@javiergimenez5953]

I have Santa Fe 2017 with bad smell in the exhaust pipe. Do you think Cataclean will get better the emisions ?

[@MountainManMo]

This could be caused by multiple problems such as a bad fuel to air ratio resulting in too much gas. This could be from fuel not being fully burned off. This could be from an exhaust leak. This could be a bad catalytic converter. I would suggest tuning the engine first for air/fuel mix, make sure spark plugs are good, air filter is not clogged, etc. I am not sure how much this product will help depending on the cause of your issue other than to help clean the fuel injectors to help more of the fuel to burn and remove some carbon deposits in the engine and exhaust. If it smells like bad eggs then you have hydrogen sulfide from partially burned fuel.

[@arielstereo5484]

I realize the instructions say to drive 10 to 15 miles and then fill tank but is there a product performance issue if you drive 20 to 30 miles and then fill the tank?

[@komar7566]

hi. have same error p0430 have you noticed any problems with starting up / running before cleaning ? any exthaust noises ? louder ? after cleaning still no check engine ? my car runs and starts up great like new only a little louder exthaust

[@MountainManMo]

Before cleaning the car may hesitate and feel like it had less power at times. It should start easier and run smoother if it was only the catalytic converter deposits. I did not notice a louder exhaust.

[@stealthg35infiniti94]

Beware, if you have other issues, Cata clean will not work. P0420/P0430 can be caused by several other issues.

[@stevedeleon8775]

Some cats will not respond like this did...just be advised.. I've been a Auto tech for 35 years.. this & other Cat Cleaners are Hit & Miss products..

[@MountainManMo]

I agree this will not work for everyone. This is only a temporary solution and will eventually need a new catalytic converter. I use this every 6 to 12 months or when the code comes back. This Kia Rio burns oil and has carbon build up in the engine that I think is causing the issue with the catalytic converter fouling as I had replaced the first catalytic converter around 70,000 miles and figured to give cataclean a try and it has worked so far (2 years) for this case.

[@mikesecondo2254]

Good grief !! If you are a so called auto tech you should know better that crap in a bottle does not repair anything!!! This stuff is marketed for idiot's!!!!!!

[@acuralee]

I know I tried this on my 2005 Honda Accord 2.4, I got 3 codes, one was for a MAF sensor, IAC, and after I fixed those I had the catalytic converter code. I used this product, drove with a quarter tank, then filled it up. The light came back on, but honestly I think my catalytic converter actually has an issue as my car makes a noise when I accelerate. As if the current cat has been gutted. Either way I just ordered a new one and a new O2 sensor. I’d much rather have my vehicle be silent than going with a straight pipe (I live in Florida). So hopefully others have better luck.

[@ktermalkut8332]

I use COSTCO GAS and the catalytic converter issue light on my dashboard went away, That was after I had driven at 80 mph for around 45 minutes on an expressway. It came back after about 2 weeks and when I refilled my gas tank and drove around at regular speeds it went away again. I used to use only Shell gas until I found out that they put their cleaning additives only in their premium gas. Costco gas is top tier gas and has cleaning additives.

[@SaltyTubers]

Same here, this stuff really works!!!

[@MountainManMo]

Thanks, It has helped me pass emission inspection for two years now.

[@me5768]

It did not work in my car, but it was worth a try

[@MountainManMo]

It works around 60-80% of the time after around 100-200 miles and only for a few weeks to a couple months when the light first comes on. It works less often if the light has been on for a while as in my case now after three years of avoiding changing the catalytic converter for inspections and only for a couple of weeks at this point.

[@Wilson632]

I poured a bottle in my 05 Ford Focus after having cat not ready yellow light on code reader drove the car 130 miles green light popped on code reader. Should be good to go. After my mechanic told me I needed to spend $1800. I don't think so.

[@arielrodriguez6980]

If there was oil in the spark plug well and the spark plugs where changed would the oil that was there cause a P0420 code? That is what the scanner shows but I am not sure if the oil was the culprit.

[@bcrowexperia]

had this same code on my 2015 kia soul, followed the same steps but my vehicle is jerking still when i go up a hill or when i press the gas after being at a stop. what should i do next?

[@MountainManMo]

If the code went away then there should not be a major restriction in exhaust flow. I had my car jerking for other issues including old spark plugs (5+ years) and a bad misfiring cylinder from an intermittent failing coil pack and did not realize until a second coil pack completely died which then required me to keep my foot on the gas to prevent the car from stalling when stopped. It is hard to diagnosis the issue with so few details. I would think through the fire triangle: Fuel, Ignition/spark, and Oxygen / Air. Do you have a clogged fuel filter, fuel injectors, etc. Do you have good spark plugs, coil packs, wires, battery, alternator, etc. Do you have good air flow through a

[@BayAreaLens]

2013 accord, this turned it off (check engine light) for about 2 weeks, light just turned on today , same code , debating if I should try it again or replace the downstream 02 sensor.

[@kevinabarca5740]

So I have the same car I’m gonna try it td how did it turn out for you?

[@BayAreaLens]

@@kevinabarca5740 well it turned off the light , I followed the instructions to the T, and on my second loop on the freeway back home it shut off , ended up turning g back on a couple weeks later but I think if your cat isn’t super dirty it should be ok.

[@Workingcockers]

This product is about 60% xylene and 30% acetone (lacquer thinner). I had a 2010 Subaru Forester and simply dumped 1 gallon of lacquer thinner in my Subaru and filled up the tank. Drove it around and the check engine light turned itself off. It is much cheaper than Cataclean.

[@paulhorzempa9522]

Glad you mentioned that the components of Cataclean is basically lacquer thinner. Checked the MATERIAL SAFETY DATA SHEET of Cataclean and sure enough it very similar to lacquer thinner. When you do a web search on using lacquer thinner, most articles say it will destroy your fuel system components and/or engine because of the acetone in it and recommend Cataclean; I assume the have not looked at what Cataclean is made of. Jasco lacquer thinner has a 1%-5% concentration of acetone.

[@chrismanning1171]

This fix is temporary. It lasted me about three months. I plan to change my spark plugs which should help the cat stay a little cleaner.

[@MountainManMo]

Yes, this is a temporary solution which I generally use to pass inspection and will reuse in a few months similar to what you have found. Also check your PCV valve as that can lead to higher oil consumption which fouls the catalytic converter.

[@chrismanning1171]

@@MountainManMo Thanks for the tip, I will check the PCV valve.