p0420 code Toyota

 p0420 code Toyota

Exhaust leak testing and P0420 Catalytic Converter Low Efficiency Code Diagnosis

hi there welcome anybody I'd want to start out via way of means of apologizing for a number of the terrible lights or echo sound that you will be listening to I'm running on the incomplete facet of my save that is the facet that my my to submit heist is in I'm running closer to getting a constructing end however in any case would not count number nowadays in the store we are diagnosing a 2002 Toyota Camry this component's were given round 3 hundred And thirty-8 thousand miles on it that is sort of unparalleled it is sort of a unicorn right here in in Wisconsin commonly those automobiles are quite rotted away via way of means of 

by the point they attain two hundred 220 240 they may be commonly rotten via way of means of then this component's sincerely in genuinely top form all matters taken into consideration now nowadays we are diagnosing a p0 420 catalyst low performance code on financial institution 1 due to the fact that is the four-cylinder 2.four liter we are handiest handling a unmarried financial institution however we do sincerely have Catalytic converters in this automobile we've got the manifold cat which comes as this complete meeting catalytic converter after which down decrease withinside the exhaust device we sincerely have every other 

smaller catalytic converter however simply word that the handiest cat that is being monitored via way of means of or o2 sensors is that this the front cat so we've got an air gasoline ratio sensor hooked up proper withinside the pinnacle of the collector right here after which simply underneath the cat we've got a conventional oxygen sensor there may be sensors on This car we do now no longer have a 3rd sensor tracking that submit catalytic converter on right here that is a California emissions car now no longer that it genuinely topics it simply commonly topics for while we sincerely order the elements the dag is quite a 

whole lot the identical so first matters first I observed a exhaust noise at the manner in it it appeared like a loud exhaust so let's pass in advance and hearthplace this component up see in case you men can pay attention it  So I'm now no longer positive in case you men ought to pay attention that exhaust noise aren't while the sink fired up however we were given a have a take a observe that first due to the fact withinside the occasion of an exhaust leak previous to our downstream o2 sensor we ought to throw off our 

readings and reason this trouble so it is now no longer unparalleled to have a rusted out pipe or perhaps a awful gasket or some thing particularly in a automobile of this excessive of mileage so how what's the what's the perfect manner to discover this exhaust leak properly I to do the take a look at with My save vac so get out the store vac and hook the hose into the hole facet the the exhaust facet of the store vac which goes to provide us stress after which as you may see right here I hook it up into the tailpipe of the auto now I choose 

to do that bloodless due to the fact as that steel warms up it expands we will pass in advance turn at the on the store vac and I were given a bottle of soapy water right here that is much like dish cleaning soap in right here and water combined up and what we are seeking to do is create bubbles When we spray it at the exhaust so turn the store lower back on and simply begin spraying and once more I want to do that bloodless due to the fact I like a good way to see properly to begin with I do not need the soapy water to evaporate at once after which additionally our steel is smaller it is gotten smaller in comparison to while it is warm and it 

sincerely expands out then which can sincerely forestall the leak so preserve spraying it down on pinnacle there may be genuinely not anything right here that is inflicting any bubbles let's head Underneath and notice so with the auto pannier we begin to spray the exhaust down and not anything at the gasket seal among the catalytic converter and the down pipe let's pass a touch in addition spray this flex pipe and there we pass we've got an glaringly Kedar flex pipe now this is submit or after our o2 sensor in order that that oxygen 

intrusion that is coming in there is not sincerely going to have an effect on our analyzing so that is what is sincerely occurring right here men the peel four/20 code Is telling us that we've got a cat low performance code it is the use of the downstream oxygen sensor to choose the fitness essentially what is occurring is the sensor is being greater energetic than it genuinely need to be over a positive time period that is essentially the handiest code definition that we've got over a take a look at quantity of time some thing this is those sensor is greater energetic than it need to be commonly submit cat o2 sensors are a relative flatline except we run In wealthy early nor going to experience reduce sticky label or extensive open throttle sort of component 

commonly the ones sensors need to continue to be quite regular flat line and when you have a conventional the front o to rear o2 automobile you may sincerely watch them and notice in the event that they examine now we are handling an air gasoline ratio sensor withinside the the front, so it is a touch more difficult to do however exhaust leak smart we've got our air leak after our dimension device, so we are going to be ok it is now no longer going to be

Causing inflicting our hassle on right here so what do you do subsequent nicely subsequent we must genuinely see if the cat is operating and the simplest manner to get a catalytic converter operating is to get it warm it needs to be warm which will do its chemical magic that takes place inner there the usage of the rhodium platinum and palladium this is genuinely type of scrubbing our exhaust fueloline it needs to be warm so as for that chemical response to paintings so permit's pass beforehand and get the engine as much as Operating pace as much as its its running temperature we need to type of take a actual first-class near have 

a take a observe our financial institution to feel excuse me financial institution 1 sensor to our submit cat sensor and what we are seeking out is that enormously regular instantly line now we are simplest at idle permit's pass beforehand and simulate a cruise I'm going to head beforehand and bump this factor as much as approximately 2,000 rpm and spot what we will see all proper so this is approximately 2,000 rpm We're seeing a quite great quantity of switching in there very just like a sensor one sensor [Music] [Applause] which tells me our cats now no longer clearly now no longer clearly doing its activity however there may be one factor I type of need to test that sensors operation clearly short make certain that it well responds to wealthy and lean situations so what I'm going to do pull a vacuum hose to simulate a lean Condition that 

sensor ought to pass complete lean proper round a hundred millivolt mark genuinely that is going even decrease short-time period trims reply brilliant after which we ought to see it swing there we pass short-time period trim ought to once more reply lovely so we are capable of see the overall spectrum of the voltage variety for the sensor that means we will get as little as lo may be and we will get as excessive as hai Kabir sensor seems to be to be functioning well so at this factor I Believe this is proof sufficient to head beforehand and deployation a brand new catalytic converter into right here I will test how the how the vintage one appears as soon as it as soon as it receives off so I'm gonna pass beforehand and and begin pulling this factor aside all proper right here we pass [Music] [Applause] [Music] slime on All proper in order that ought to be 

all of the bolts did absolutely each person else word a internet and that time-lapse there that 338 thousand mile vehicle and I failed to smash any bolts oh this is I'm gonna have to shop for a purchase a lottery price price tag this night I did must torch of them to get them unfastened however oh wow no damaged bolts so this factor continues to be clearly warm get it out of right here yeah I do not need to the touch this permit me grasp a few welding gloves all proper so the cat continues to be very hot manifestly you should You should have waited till it cools oh this is this is as much as you I selected to take it out while it is warm I'll get you men a near-up photo right here of the honeycomb inner however it's miles all intact I do not see any 

damaged portions I see a bit little bit of a few residue stuff on there however not anything not anything too critical searching no rattle to it not anything not anything in any respect all proper so as soon as the brand new one receives right here I'm gonna pass beforehand and throw all of it returned collectively I'm going to smooth up the gasket surfaces on Both the decrease pipe and the cylinder head throw a few new gaskets in there throw the brand new cat in there once more it is California licensed emissions California emissions in this automobile so I'll get that cat set up and getting all get all of it button returned up after which I'll do a little follow-up trying out with you men so simply hold on one 2nd all proper in order you may see the brand 

new catalytic converters set up I nonetheless must positioned all of the shields and Everything on there however preserving this man at 2,000 RPM with the automobile as much as temp first-class flat line on our cat tons exclusive searching than it did earlier than so I want to see that that may be a lovely searching line for our rear row to head beforehand and close this factor off o.k. so I'm gonna get this factor all completed up get all of it buttoned up beneathneath right here get the shields all returned on and I'm gonna clean out the codes and take this factor for a check force and make certain that it Actually passes its cat reveal so I can be 

proper returned nicely o.k. men simply were given returned from the check force and we've all the ideal video display units entire and a terrific vintage nation of Wisconsin byskip on that emissions record so we're true to head this vehicle is all constant up so gonna get it returned to the consumer now so thanks men for looking in case you preferred what you noticed in case you found out some thing on this video some thing deliver us that thumbs up Subscribe to the channel if you have not already Lobell icon click on on that in order that manner you get notifications for the following video that we released so once more I clearly respect you men being there thanks for looking these days and as continually glad wrenching anyone thanks