For a long time I wanted a Toyota mechanic to create their own RU-vid channel hoping for that mechanic to give great advice on how to take care of your own Toyota and not only tell you but also demonstrate how to. I can say that you sir have done that. I'm so thankful and grateful that you decide it to take time out of your day and make videos for us.
Holy heck man, this video is soooo good. I had a P0420, Toyota said it needed a new catalytic converter, but there were some fishy aspects to the diagnosis. 1) they spent maybe 5 minutes diagnosing it, and 2) the truck only had 96K miles on it... I remembered that I hadn't changed my spark plugs in awhile (at least 60K miles on copper plugs), so I had them change the plugs. The light hasn't been on since I cleared the code after they installed the plugs. Like you, I wanted to know if the catalytic converter was bad, why was it bad? The Toyota tech told me cheap gas, but again I just felt they were reaching for the easy answers. In context, my truck has 96K miles on it, but it's 15 years old. I don't drive it much, only to the grocery store about a mile away. It doesn't even warm up in-route. That combined with well over-due spark plugs tells me (based on your video) that the catalytic converter is probably prematurely worn. This is why I went to Toyota for a diagnosis -- THIS IS WHAT I NEEDED TO KNOW -- but instead they said my catalytic converter on bank 1 was 'non-functional' due to cheap gas and didn't even ask or check my spark plugs in their service history or ask about its driving conditions... It was such a scam, the dealer was, and to think how much you offered here totally for free, I just feel cheated by the dealer. But at least I now have my answers... at least I think I do. Of note, the dealer said it wasn't an exhaust leak because if it was, they'd hear it... You're telling me they had time to pull the code, plug the exhaust, listen, and fill out the paper work in 5 minutes? I don't have to be a mechanic to know they just pulled the code and made up the rest -- so sickening. This was Toyota of Mt. Pleasant, TX for reference.
Did you mention your driving cycle? Did you mention the plugs?? When we pull codes we look at the freeze frame, and ask for compare AF SENDOR or on older cars we compare o2 sensors values. As a toyota tech we only get so much information from the customer.
@@jakemillson7190First, I appreciate all that you do... Not all techs are bad, actually the vast majority are great at what they do, and I respect them greatly... I did not mention my driving habits, until watching this video, I didn't even know it was a contributing factor... I did not mention the plugs, either, until I was told that I either had to pay a diagnostic fee ($120 if I remember) or get the diagnosis for free if I approved and paid for the fix ($2000 if I remember) -- I asked if I HAD to do what they wanted to avoid the diagnosis fee (i.e. replace the catalytic converter) or could I instead use the fee toward new plugs cause I hadn't changed them in awhile. They said I could use the fee toward new plugs, so that's what I did... As an update, I'm at 120K miles now on the same catalytic converters and no check engine light. A combination of new plugs, a couple runs of "Cataclean", Shell only gas (i.e. no more whatever's cheapest), and every time I take it for a short trip, I let it get up to temperature and then almost floor it on a 4-lane wide open highway from about 15mph up to about 60mph... I am not sure what info they'd have from a 'freeze frame' as you call it. My understanding, and you'd know more, is that the computer does a catalytic converter check every so often, and if it fails enough times to meet a criteria, it throws the code. Because of this, I don't think a freeze frame tells you much because it sounds like Toyota knows that a catalytic converter check on a cold engine will fail, but that this would have to happen many, many times in succession for a code to be thrown. It was my driving habits that allowed for this to happen, and if looking at a single freeze frame, it would likely appear as though my catalytic converter was non-functional, but the larger context needed is that the check(s) were done on a cold engine, most likely. It is worth noting that the dealership is well over an hour away with mostly interstate driving between me and them, so when the truck arrived, it was already warm. If they'd looked at current data rather than freeze frame, I think they'd have seen that the catalytic converter was likely fine. Again, you have to remember that it took them all of 5 minutes to diagnose it. I'm to pay $120 for what I can get from AutoZone for free? i.e. someone to read the code and tell me what it means? That's the issue, for me. If they'd spent some time, I'd have been OK with the fee, but I think if they'd spent the time and, when advising to replace an expensive part, rules out everything else, they'd have thought to ask about my driving habits, or the spark plugs, or anything else that they'd have known could have caused the issue. I think in that world, I'd have gotten the answer from them and thus would have felt I'd spent the diagnosis fee wisely rather than waste it.
Some people are born natural coaches or teachers. Others can be trained to be good. I believe this man is a born and trained teacher/explainer. Much appreciated.
Another thoroughly detailed video with so much relevant substance that you won't find anywhere else. Toyota/Lexus should have recognition awards for folks like you. 👏
no, every person who watches a video and fixes their own car, is a lost customer for the dealership shops. Dont expect a metal or award from the corporation.
Also a low quality downstream O2 sensor can also trigger P0420. Happened to my 04 Tundra double cab. Replaced the sensor 2x with cheap made-in-China ones from eBay and the same code keeps popping up after I’ve reset it. Thinking the CC is bad, I got a quote from a muffler shop to replace it for $2k (cat has to come from Toyota dealer they said, no aftermarket units). Too expensive. So I tried one more time, this time using the more expensive Denso OEM sensor. 1.5k miles later, the code has not reappeared. Nothing wrong with the cat. Lesson learned: don’t use cheap, no-name Chinese- made parts. Almost spent a fortune trying to save a buck.
They definitely lied to you. Lol. Well I have a 04 Lexus gs300 and my exhaust manifold with 2 cats cost 4k from Toyota, meanwhile I bought aftermarket for $500 and as you said I used the Denso sensors and haven't had a problem in 15k miles.
I bought a 03 sequoia with those codes for Catalyitic converters . Dealer has discontinued the part from what I was told . Aftermarket installed is about 2,000 . The truck was a original owner well kept so imo it was worth the save . The prior owner had a bad radiator and drove it miles to just make it home . Blowing the head gaskets severely. I replaced the engine with a lower mileage used engine . Runs amazing now but I now have theses codes . I think the cats were damaged from the excessive heat and coolant going though the pipe .
The CAT on my 2008 Prius became suspect after the ECU threw a PO420 on a 9 year old car with 178,000 miles. At first, the light would stay on for a day or two - then turn off. But as time went by, the light would come back on and stay on for longer and longer, until there came a time where it remained on. It took around nine months to get to this point, The engine has always had it's oil changes at 4-5000 miles (full synthetic 5-30) and everything was intact - no exhaust leaks, no misfires, no nothing. This was the first time the CEL came on since I had the car. The dealership wanted $2200 plus change for a carryout converter for the car. I elected to replace the exhaust system and the converter pipe/resonator with a system made by Walker Automotive. I've used Walker exhaust parts for my cars while I was in HS during the late 70's and they make quality components. A little welding was necessary, but not a deal breaker. The actual CAT pipe was bolt-on and exactly the same as the OEM. I purchased the entire system for around $600 and some change back in 2017. Five years later, the light has remained off. The mileage is nearly 240K as I type this. After some research and digging around, another phenomenon is hard at work inside of the CAT: as exhaust gasses pulse through the device, the precious metal load within the honeycomb is ever-so-gradually being worn away and subsequently reduced with the passage of time and passage of exhaust gasses; a process akin to erosion. Have you heard of this explanation? Love your videos and I'm waiting on the day you replace the ABS actuator on a second gen Prius!
Me too my buddy has a corolla that has an evap problem I believe it's with the canister but I don't have a smoke machine gotta have that to test evap guys
Thanks AMD! I have a 2006 Sienna with 155,000 miles, and a P0430 code. I hope to smoke the exhaust system next week to see if I can find a leak. I want to find the reason for this code, rather than just replace the cat. Great video!
@@DylanL69 In May, I smoked the exhaust by removing the air/fuel sensor on bank 2. You can see the smoke exiting at the flange between the cat and oxygen sensor here drive.google.com/file/d/1p5fjdGIE1vrhlpXQia26AOWaGi6Mtvos/view?usp=sharing The cost of the repair was less than $10, vs hundreds to replace the bank2 cat.
My 07 Lexus RX350 threw a code P0430 and used Cataclean to see if it'll work.. well it didn't.. but i'm wild guessing now that there could be a very tiny exhaust leak that I'm not hearing... the car currently has 88k in it.. will be bringing it to a nearby exhaust shop to see if there is a leak.. great video by the way!.. these info's were helpful!
Wow perfect timing! We are looking into a hybrid Toyota 2018 RAV4 from an auction and the one we found has a missing catalytic converter which I had no clue what that was. Thanks for the info!!
I once used a cheap chinese downstream sensor as part of a parts cannon diagnosis. $20 was cheaper than a scan. It fixed the problem of the failing sensor code but later gave me a P0420. I replaced the sensor with a good one. 50K miles later it is still good at 198K. My 03 Camry with 120K miles threw a P0420 code and it definitely has an exhaust leak up front.
My favorite part is where we have to drive around to get the readiness monitors ready because it’s beyond ridiculous with a permanent code, the epa says we can’t pass emissions with a check engine light on, but they have zero issues with us wasting time and fuel non stop to in an attempt to get these bs monitors ready.
With COVID-19, the case of stolen Catalytic converter exploding more than 3x in some places. I hope Toyota, especially the hybrid have catalytic converter shields installed from factory. Not just USA, the epidemic of Cat Theft also exploding in UK.
Avoiding cat thefts by making units harder to cut out reminds me of the following phrase: When running from a bear that is chasing you and your pals you don`t have to be faster than the bear, just faster than the guy next to you. Putting up obstacles will make them look elsewhere.
Totally agree with that. What makes him a gem in my book is not only is he knowledgeable but very few are willing to share what they know with others freely.
AMD gives back to the community. Apparently he has a good job and shares his knowledge. Like HVAC guys, most mechanics just look at commissions, not truth and aren't far above the converter thieves mentioned here. I wouldn't doubt if they were the same people.
@@OCgraftedin77 True, I hate to generalize, but I shouldn't be so ecstatitic over the one extremely honest guy I got after half a dozen trying to sell me new $4000 units. This one fixed it same day for under $500 - small, self owned shop, sought customers not commissions.
I have a Sienna 2008 with 130K miles on it. It started to set P420 once a month after I added Chevron Fuel system cleaner to my gas tank. Sparks on Bank1 never been replaced ))) Will see what is there soon.
My ‘03 4Runner with the ultra reliable 2UZ V8 is beginning to throw the dreaded P0430 code more persistently than it has in recent times😟 I’ve come to expect something of that nature may happen… it’s been in our family since my grandma drove it off the lot brand new and now has 293,700 miles. I’m also really stringent with 5k mile oil change intervals, belt/fluid changes and always use 91 grade gas, but even with meticulous ownership, it’s not that surprising the system would start wearing out with the mileage it’s seen 😅 I’m really hoping that when it comes time to smog it again (I live in a state with yearly emissions testing) I can just get away with running a gallon of lacquer thinner in a half tank of gas and cross my fingers haha! And if it doesn’t work, I’ll just have to bite the bullet and either replace the cat for a couple thousand $’s or just throw an entirely new exhaust system in it, because I intend to drive that truck until the wheels fall off it!
Yes. If you use clamps in the exhaust use also exhaust paste because you may have the bad luck of having a car that also uses downstream o2 sensor to adjust AFR.
AMD, maybe I missed it, but a bad downstream sensor sending inconsitent readings to the ECU might also cause a P0420. For example, if the ECU tests using a rich condition, and the downstream o2 does not respond with a higher voltage, then the CEL might get triggered.
Bought my 08 4Runner used. Year later p0420 came on and off intermittently. Then the p0430 came on. I used cat cleaner but didn’t work. I had hoped it was the sensors so I bought them. Now with your video I just need to check for exhaust leaks. I do have two universal cats already but my car uses 4. So now I’m researching how to tell which one went bad. Mechanic said there were no misfire codes. Idk. Should I replace the sensors anyway or return them? I do hear a rattle so I’m assuming one cat is bad. Again, why did they go bad? I replaced my spark plugs after I had bought the car and they were seized and old. Wish you were local. Most mechanics I meet don’t have time to diagnose and explain honestly. thanks sir!!!
I have a 1996 base Toyota 4Runner with this problem. rpm’s run up and it doesn’t accelerate. I had the Trans checked today. It’s ok. Going to have the CC checked ASAP. TYVM
Thanks for an informative video! Would you recommend adding one additional form of diagnostics, taking the temp of the Cat before and after to see if it is clogged? I have heard this is a thing, but have never tried it. Thanks for your helpful videos! I have a 2007 4Runner V8 with P0430 (bank 2) codes that trigger every 500 miles or so. I'm assuming I have a bad cat, but really don't want to spend the $$ to replace. Could a bad cat cause or lead to poor gas mileage? I'm getting about 13.5 MPG but would love to get that up to 15-17 MPG. Thanks!
I’ve got a 2008 4Runner with the V8. The exhaust manifolds are notorious for leaking, I would start there, especially since you are only getting the code on one side.
Absolutely love your channel! I have a 2006 Toyota sienna 3.3 L. I bought it because I just absolutely have always loved Toyotas, but it has turned out to need a good bit of a little work down here and there. Every since I’ve bought it for the past year, the check engine light and the traction control light has been on. It is throwing codes for the O2 sensors and catalytic converter‘s. Why would this be? Could it be just an exhaust leak causing both or something definitely wrong with O2 sensors.
Chrystal, issues you have described here could be caused by several different malfunctions. You failed to mention any specific codes. Generally this video emphasized there are two possible causes for a P0420 code, you either have an exhaust leak in your exhaust between the engine exhaust manifold and the O2 sensor at the output of the Catalytic converter or indeed you do have a faulty Catalytic converter. Also, it was emphasized that if you don't run your engine long enough periods and normal operating temperatures you may get a False P0420 code. In addition, there are certain year manufactured Toyota's that have the Second O2 sensor mounted with a Gasket that if it fails it will create an exhaust leak and therefore generate a P0420 code ! Other than these scenarios for your issues you described , you need to provide exact Codes that your vehicle is experiencing.
Not said: oily engine blowby is a source for plugging the cat with carbon. Install an oil catch can on the PCV hose after the car's warranty expires. The larger the can, the better.
One more reason to have P0420 is adding to fuel tank Techron Fuel System Cleaner. Got that code on Sienna 2008 once after using half of tank with it and half left to use. Cleaned error and never got it again. Obviously chemical reaction going on there wasn't really an exitement for Engine Control System. Will be adding another bottle when refill. Ask me what's up with that if I forget to update
For a vehicle burning a quart of oil every 500 miles, would you recommend adding catalytic converter cleaner such Cataclean as preventative maintenance? Maybe not paint thinner as Scotty Kilmer recommends but any aftermarket cleaners you would recommend that doesnt damage the vehicle?
Hi! Honestly the cleaner won’t do much if the car is still burning oil. I would fix the oil consumption first then use a cleaner specifically designed for catalytic converters
@@TheCarCareNut Hi! I'm pleasantly surprised by your reply thanks! The vehicle is an old 2008 Toyota and has the common 2AZ engine's piston ring defect (reference POL 14-12) which is causing the oil consumption. Honestly, the Toyota dealerships in my area did me a great disservice that I won't get into and would not cover the cost to replace the defective oil control rings when it was still under the extended warranty. I 100% agree with you, it would be great to fix the oil burning, but in my situation, it doesn't make financial sense to do so. 1) Based on your years of experience, are there any specific cat cleaners you would recommend? 2) Any other issues that I should be on the lookout for if it's consuming oil this badly? This doesn't make up for the way Toyota has treated me, but your help is greatly appreciated. Thanks again!
Ana angry Asian: start changing the oil with Amsoil OE Oil. That’s their inexpensive 100% synthetic oil that’s better for oil burning engines. They have other tiers for their motor oils I have the same exact engine on a 2004 and have been able to slow down the oil burning issues to 1 quart every 2K miles instead of 1 quart every 1200 miles when using Mobil 1 after 1 month switching over. Do 2K oil changes instead of 5K oil changes as mentioned in car manual. Quick oil changes with 100% Synthetic is your best bet unless you want to fix the piston heads on that engine. I’m driving my vehicle until the engine dies.
Honestly at this high rate of consumption I would look into fixing it if the rest of the car is perfect. If not consider moving on from it. In the meantime keep topping off the oil and that should keep it running. Cleaning the cats at this point is money down the drain honestly. I don’t have specific experience with cat cleaners. Spark plugs at some point will start oil fouling and causing misfires and if that’s not the case and still there’s misfires it might just be low compression. That would be the worse case scenario.
I appreciate your channel, Thank You! What about using lacquer thinner to clean catalytic converter? Or remove them and soak in soap, like Dawn, to clean when removed? Or using a special Cat clean mix?
NY and CA use expensive double cost cat converters. Cars sold there come with a "California Emissions" package and calibration. You must buy a very expensive replacement.
Auto week says it is the same in Connecticut, Delaware, Maine, Maryland, Massachusetts, New Jersey, New Mexico, New York, Oregon, Pennsylvania, Rhode Island, Vermont, Washington state and Washington D.C. They are collectively called "CARB states."
Yeah mine is a2007 and it does have an oil burning issue apparently with the rings not sealing well. Put a new cat in three years ago and hers the P0420 again.
Thank you for this video. We noticed an exhaust smell in the cabin of our 2008 Corolla recently. We only notice it when we're not moving. It doesn't smell like rotten eggs at all to us. I took it to independent mechanics and they said it was the catalytic converter. Shortly after that the check engine light came on and the code read PO420. Wondering if I should question their assessment. Any thoughts are welcome.
Does your car have any of the warning symptoms of a bad catalytic converter? Oil consumption? Short trips? Never warms up? You could throw a new cat at it, but if you're burning a lot of oil, it might go bad again sooner than you like.
Ahmad. Very professionally done video. Hope you can help. Lexus ES 350 2008 po420 code but the car is very powerful no symptoms of a bad cat, good acceleration etc. red triangle,tracking control and couple more lights on cluster. You suggested plugin exhaust for a leak, if there’s no leak where would the built up pressure go. Thanks Andre Ethier
I have the exact same car exact same issue. Tried everything. Lights always comes back. Changed o2 sensor.lights off two days. Came back. You posted a year ago. Ever figure it out?
Keep on doing what you are doing! Now unto him that is able to keep you from falling, and to present you faultless before the presence of his glory with exceeding joy, to the only wise God our Saviour, be glory and majesty, dominion and power, both now and ever. Amen.
Just bought a 2003 Vibe and the cat code appeared on the trip home from the used car lot.I took the downstream sensor out and put it in the extender.The code has not come back for a month or 100 miles. There never was any driveability issue.I am in a rural area of Canada and am a low mileage driver.I am hoping to save up the price of the converter and install over a one year period.Car has 185,000 miles, no exhaust leaks, and doesnt appear to be consuming oil.
Why is my Bank 2 cat failing: its Mode 6 is 50% higher than the Bank 1 cat. Zero misfires and fuel trims look good. However Bank 2 has the EGR which had a completely clogged inlet tube (P400) which was quickly repaired. Still, why is Bank 2 cat so much worse? EGR? Engine leaks oil but doesn't burn it. I have no clue. (It's a 2010 Ford Escape 3.0L Flexfuel V6) NOTE: this engine has Wide Range upstreams.
I have a 2005 Highlander which throws of fa PO420 & PO430 code. otherwise it runs well & gas mileage is fine. I do NOT have an emissions inspection for my vehicle. Is there any cheap & easy way to stop this code? Replace the O2 sensor?
Remember what the CCN said about the things to check, including vacuum leaks. Replacing two catalytic converters in hopes that is what really is the problem is a lot of money to place on a bet. If I get a P0420 code again I will rewatch the video, take notes, and check each issue (including the possibility of not driving enough / far enough) before I get too wild with my wallet. If the two codes came up within a year or two of each other, I would be especially dubious of the two converters failing so close in time .
On your 2005 highlander I would check that exhaust for leaks real well as they are notorious for leaks. If everything checks out then unfortunately it will need cats and on that one it’s the exhaust manifolds if memory serves right
@@TheCarCareNut I have purchased the 2 rear cats from Walker and had them ceramic coated...the front Rh manifold does leak...the gasket is the problem..it is not cracked...I also have the new factory O2 sensors. My 4 runner has 195k on it.
Hello Sir, I am having a P0420 code from my corolla 2018. I bought a new CAT and bank 1 sensor but its still popping up. Checked and worked on all leakages but its still the same. Kindly advise on other ways to resolve this issue. Thank you
2002 Toyota Tacoma v6 5vz engine. One hundred 34 thousand miles, runs great no engine check engine lights but it is leaking some oil from rocker/valve covers. Cleaned the Mass Air Flow sensor then removed and cleaned the throttle body along with the Idle Air control valve. Replaced every thing being careful to hook everything back properly ...runs great and a lot smoother idle too. Commonly I drive very short distances , less than 15 miles with lots of stops in between. About week after cleaning the above items, I get a check engine light. Haven't scanned it yet but what are chances I've got P0420 code waiting for me?
Wow this was a beautiful explanation. AMD I need your help please. I have a 2002 ls430 with 126k miles. Only when I accelerate hard I smell sulfur or rotten egg smell. I have no codes and no drivability issues. Idle is smooth. I replaced Spark plugs, fuel pressure regulator, air filter, fuel filter, pcv valve, there are no oil leaks. Please help thanks. 🙏
2004 4Runner v6 had a bad coil/misfire on #2 cylinder…. Fixed that, but now a persistent bank 2 cc code… assuming the misfire trashed the cc… question is, at that age & 190000 miles, is it worth buying the OEM part?
my 2 honda CR-V car got stolen my cat, one is stolen in front of my house and another is in my parking workplace. they target mostly Honda CR-V, Hyundai tucson/Santa Fe and Kia. because those 2 the cat still in the lower bottom and easy access. Toyota is genius because they put their Cat between the engine cross-member. I check the protection u mention and it cost nearly 500$ just for the metal shield and some bolt. and not available for all car.
Best bet is either anti theft shield/cage/plate for your vehicle OR aftermarket 2-way paging alarm with shock, proximity, and tilt sensors. Vehicle alarm will alert the second someone is within close range of your vehicle and alarm is triggered before they can even touch your catalytic converter. Compustar or Viper is your best bet for those 2 way paging alarms.
Ive seen cats gettn stolen TWICE on their same car. I would think $500 is better than $2-3k each shot. I thought ppl who have older or cant afford, use a clothes dryer/washer vented back shields. Look, if a theft wants it, THEY'LL GET IT, but it WILL deter them if they have to WORK for it. Good luck!
There is no way the O2 sensors are testing how good the cat is working. O2 sensors do not detect CO2. The O2 sensors will only tell the engine computer how much oxygen is before and after the cat and that is how it can detect if the cat is plugged. They only determine if the cat is plugged or not.
I've just bought a 2010 Highlander Hybrid Limited. 128K miles. I just got the P0430 Code. I cleared it, and it has not come back on yet (50 miles later). If I replace the Plugs, do you recommend NGK Iridium plugs and Coils, or Denso Factory plugs and coils? FYI, My 06 4runner with 250k miles runs excellent on NGK Iridium and NGK Coils.
2021 RAV4 31400 miles P0420 secondary code P013A, could a damaged oxygen sensor be the problem? I had hitch installed and a wire installed for hitch wiring came loose and was thrashing under the car and possibly damaged this sensor…. I might also mention my 36 month warranty expired in very late July…. Currently very concerned…
I just installed a new starter in a 2006 Lexus gs300 and then ran my scanner to see what was happening elsewhere. Everything seems fine but I noticed that the temperature difference between the number 1 cat sensor and number 2 sensor was only about 200 degrees. I thought the temp between the input and output was suppose to be a bigger margin. Can you explain?
@The Car Care Nut I have a 2004 LS430 w/ P0430. At a warm idle, Graphing the 02 sensors seems to show the downstream bank 1 is pretty constant at around 0.8V, but the bank 2 downstream is pretty flat at around 0.06V. Why would it be so low? It doesnt seem to oscillate like the cat is bad. Is this likely an exhaust leak, bad cat, or something else? The car has about 120k miles and seems to run fine.
I don’t have any lean codes or any other codes, but seems my catalytic converter is broken inside and I hear a strong multiple tick sounds and rattling sound when accelerating at slow speeds with windows rolled down, what could be the cause of failures any suggestions please TCCN ?
Hi, thanks for the info!! My Taco only pulls a 420 code when humidity rises, like if its sunny for days then rains bam! P420, i erase the code runs good then rains, p420! ????? Pulls a code when it snows! Cold weather , humidity rises snows pulls a code.. if i have steady weather never pulls a code... what gives?
Thank you for this video. I have this problem but it mostly happens when the gas level drops to half a tank or below. And after I stop and turn off the car. Then when I get back I the lights start flashing and the code has been thrown again. Any ideas?
Considering buying a 2024 Lexus NX 350H/hybrid. I heard that this vehicle seems to have a primary catalytic converter under the hood attached to the exhaust manifold and a secondary one beneath the car. Concerned about theft of the secondary one below the car. Is this a valid concern? Does this car have 2 catalytic converters?
Hey! This is an informative video as well as your others :) One of my friends, a month ago, purchased 2015 Ford Explorer (ex Police Interceptor). Couple of weeks after the purchased, his vehicle showed P0420 code and I used my scan tool to read the code and to look at oxygen sensor data. Basically we decided to use "cataclean" fluid and Liqui Moly Injector cleaner and after a few days, check engine light went off, then came back and now it is completely off, at least for aforementioned issues. Recently he got codes for lead oxygen sensor P2197 and another one similar to that, if I am not mistaken. His oxygen data graph shows the sensors as having low voltage, they mostly camp in the low mV area. What do you think can be the issue? Should we just try to clean oxygen sensors(B1S1 and B2S1) and see what happens?
Hi thank you for amazing video! I have a question about the Engine Air Filter. I have 2014 toyota venza LE and 4 Cylinder. I just bought and used the STP Premium Engine Air Filter (from Autozone). I just realized that this air filter has the oil in the filter. Therefore, I took it off and replace with the other air filter (air filter without oil). I’m very worry about the oil in the air filter. Will the oil from the air filter damage my vehicle (engine, mass air flow sensor, intake, etc)? I just drove with the STP premium air filter about 25 miles. Thank you so much!
Hello, awesome video. If a car burns oil and thats one of the reasons a Cat can go bad, installing a oil catch can help prevent damaging the catalytic converter?
No. A catch can only catches oil in the crankcase ventilation air. We're talking here about microscopic quantities of oil actually burned in the cylinders; these can poison a catalytic converter.
I have a recurring P0420 code which can self clear or erased with OB2 tool. My car is driven mostly on highways, does not burn oil and very seldom driven short distances. What is the issue - defective O2 sensor or dirty/damaged catalytic converter?
My lexus got its catalytic converter stolen. I don't want to get a new as they are expensive. I also don't care about the environment much. But i do have heard catalytic converters create back pressure which makes the engine fuel efficient. Is there something to put in place of catalytic converter which will create the same back pressure and not damage the engine while giving the same fuel economy as factory?
