Except, two weeks later, its back on. Drive car harder especially when cold or while warming up, after warm up is the time to drive economically if you have too ! Thank you. 85,000 miles. 06 Outback manual trans. I have had good results with previous auto injector carbon problems, is there a better product for cat cleaning to use along with running it hard? Unfortunately, I got the feeling from the dealership that I could really screw up the car if I dont replace it. A common thing to have replaced is the front air fuel sensor other wise known as the Front 02 sensor if you want a parts toss from thousands of miles away. And ever since that repair, from time to time the CEL comes on and the cruise light blinks. He was able to get a wrench on the hose clamp to tighten it down. Prior to I put cleaner is a full take of gas when I bought the car, still running in that same tank of gas with cleaner. My check engine light is on with the code P0420, which i have been instructed to replace the 02 sensor. 2017 Chevy Traverse LT 2WD My wife told me her check engine light came on. Ive been told by the dealer it is the CAT. Engine misfires; Running lean air-to-fuel ratios; Engine surges or acts jumpy during acceleration Tks, Jim Gordon Asheville, NC. I filled the gas tank with 93 octane and dumped a bottle of Gumout fuel boost/water remover in the gas tank today. Noticed MPG drop right after engine work and told dealership twice. brakes work ok when applied normally. There are several reasons for the appearance of VTM-4 and check engine light on Honda Pilot. The biggest pain for me is warm starting issues. thank you Justin for the input guess ill get those tests. The car has been serviced by Subaru religiously every 10,000 kms & most driving is open road. Diagnosis by the local dealer P0420. Justin, thanks for sharing your expertise on this site. With age and mileage, Im trying to fix this cheaply. Your article says a possible cause is sometimes its just a small exhaust leak. -Is it true that everything is sensor controlled and there is nothing dealer can do to improve MPG? Dealer or good independent as long as Subaru parts are whats used. I too have an intermittent CEL on my 2006 Outback, 148k miles.I had the code checked,P0420. This vehicle contains the following FEATURES and OPTIONS: ABS brakes, Active Cruise Control, Alloy wheels, I bought it used so, I have no reference to what may or may not have gone on with for the previous owner. Also, thanks for taking the time to help out fellow Subaru drivers. You can also look at fuel trim with your scan tool to see if it's higher than normal. Im running 02 Impreza 2.5TS, with EJ251 for about 6 months now. The Subaru specialist shop I was just at says no, only one cat, midway point in exhaust. Subaru Check Engine Light and Code # P0420 Explained, Subaru Service; A Better Bushing for Your Subaru. Unless the Catalyst is getting no where near the light off point? Spark Plugs Need to be Replaced 1.6 5. So we replaced plugs, wires and coils on all 8 Cyl. I would in fact start with having Subaru OEM type bearings re-installed, if the bearings themselves were in fact the original cause and we installed suspect bearings the diagnoses or theory may have been correct but the correction suspect. BTW, there was no link in your reply. I would very much appreciate your help here. 2. In my experience an aftermarket Cat may last one year if it works at all. In general, if the check engine light is flashing and the car is shaking then there is a problem with one or more engine components. The car was originally imported from NY and has been in Ontario since (close to 135,000km/84000miles). At the next stop I popped the hood and noticed a severely leaking battery. Put in some 94 octane, and some fuel injector cleaner and had that spirited drive on the highway to put some life back into the Cat (as per Justins great recommendation! I would very much value your input on what I should do with respect to the recommendations I am receiving. Faulty Catalytic Converter. If after the reflash it didnt resolve the issue I would then re evaluate it, and if the Catalyst is still not reaching 600 degrees I would then replace the Catalyst. Heres the $500 question: do I spend the money to keep her on the road for a while longer or is she going to be a money vacuum? $44.77. Are you also using non OE 02 sensors? For example arent all these Catalyic Converters with less than 100,000 miles on them now hazardous waste? was not on b4 now. Because you are poor and worried the first thing you need to do is head to a parts store that will scan the car for free. Clean air costs money the media doesnt discuss it, so most are unaware. Loaners are free with 30/60/90k services & some repairs, If more than one, add additional services in the comments below, Please tell us here if you need somthing not listed or have specific instructions for us. Ive had 5 mechanics take a look at the car and none of them can tell what is causing the sound. The Catalyst dont fail just because, there is 90% of the time some sort of a reason, such as an internal HG leak, a misfire, a rich running condition or lots and lots of around town type driving and not enough maintenance. Autozone showed that the catalyst system. This makes the converter more efficientat oxidizing HC into H2O and CO2. Ive learned more here in the last 20 minutes, not just about emissions, but servicing and testing in general. Why Is The Power Steering Making Noise on My Subaru Outback? Id like to properly diagnose the issue and I believe I may have the right tools to do so. Hi Justin, I have a few Questions to help educate myself of the safest rout to go. Good idea? My thinking is that either the cat has fallen apart or faulty rear O2 sensor. Original review: Feb. 23, 2020. (he determined that it wasnt a o2 sensor problem), I dont know which one it wasbut it workedno P0420 code for the last 3 weeks.I was really stressed out after forking out 1700 for a HG change and some other sensors that were leaking oiland then a potential $1500 Cat change. I have been doing a good deal of research on the internet on the code with the hope that I might be able to avoid replacing the CAT. I am always vigilant about tightening the gas cap for several clicks. inland orthopaedics of spokane. Not pleased with them. They reprogrammed the ECM. Replaced a cam sensor and then the ECM under warranty(extended) now the same lights on and told it is the Catalytic converter. You can read here for more information about how the system works, and its always a good idea to buy your own code scanner. That means the impact could spread far beyond the agencys payday lending rule. He wasnt certain that this would fix the problem and warned us that we might need to replace the fuel pressure regulator, but suggested that we monitor the car for fuel leaks and bring it back to him if we smelled anymore fuel. $39.10. The O2 sensors, or just replace the HGs and see if the code clears? I have a 06 Legacy with 130,000 miles. Hope that helps and best of luck going forward. Unstable fuel cap 1.3 2. Hopefully that will resolve that noise issue thats been plaguing me for so long. My outback is a 2.5i, not an H6, & rust is not an issue. The first time this happened, I took it back to the shop that replaced the wheel bearings and they found that the speed sensor on one of the wheels had been damaged during wheel bearing replacement and they replaced that speed sensor. My wife drives the car now only for short, local trips and not much highway. When I get it back, Ill get those front wheel bearings changed to OEM parts and I believe that should take care of the CEL and flashing cruise light. Failed inspection recently with a P0420 code. Engine struggled to idle. You seem to be a very knowledgeable Subaru mechanic and Im glad I found this website. I need to know what I should do first. I have heard that sometimes reflashing the ECU can take care of this P0420 code reflash problem so I am thinking of trying that first. Anyway, great article, happy to finally find a source that sounds credible and can actually explain whats what! Great set of articles. At 60,000 mile maintenance, dealer replaced valve cover gaskets and timing belt. Based on all of the hits on the web regarding this Subaru problem Iwonder if theres a secret warranty out there?. went oncode po420. I really like your website and it has provided a lot of information to me on the P0420 code on my 2000 Subaru Outback. My 2004 Legacy keeps showing a P0420 code. If so, how? My front CV Boots on both sides need replacing. Low and behold recently Ive gotten the dreaded P0420. May that be the problem? A car you owned in the past had less technology and less strict emissions requirements. I am in WY where it gets cold. Taking its name from the top trim level from the Chevrolet C/K series, the Silverado is offered as a series of full-size pickup trucks, chassis cab trucks, and About three months ago, while he was at the Subaru dealer for a routine oil change, they told him that head gasket repairs and new cv boots and an axle were needed, which he had them take care of. Thank you Justin, that is good to know! Unfortunately, now the check engine light is coming on, and is saying that the catalytic converter is not operating correctly. Now, I own and run a good shop that cares about our customers, If you go to a Dealer it will be higher, if you go to a general repair shop it may be higher still and not correct, if you find a version of my shop near you, than you should expect to pay close to what we charge if not it will be different. Howdy Justin,Thanks in advance for reading and advice. Early prototype motorcycles in the late 19th century used the same principle. I have a 2005 Subaru Legacy Wagon Limited and I get code P0420. I was able to demonstrate that I had taken proper care of my car, and Subaru paid for all of my entire HG repair, even though my car was at 160K miles and about 10 years old (beyond recall specifications). Most likely the rear 02 was set for a rear 02 sensor code on the 2007 as its fairly common. Only a scan of the code history will determine if its in memory still. It doesnt have three convertors, it has a single piece primary and secondary convertor assembly. Required fields are marked *. Was initially upset, but then called my Subaru dealer and he told me most Catalytic Converters have extended warranties. On the way home from work it had some hesitation that at first I thought was caused by me not shifting correctly however a few miles down the freeway while going 75 the car started losing power and surging. Maybe just drive it for a bit and see how it goes? Entity Nest Ep. :banana-mario::banana-mario: Problems:-Code P0306 (Misfire #6 Cylinder)-Rough Idle-Flashing Check engine light-Service Stabilitrak/Traction Control Messages-Hard gear shift from 1-2,2-3 also on downshift-Very high oil Consumption (3 quarts low) Tried:-New plugs,wires,coils. Do you think it is possible that in replacing the front sensor I managed to contaminate the cat somehow? If you have a heart monitor that states your dead, but your talking the first thing a good practitioner will do is swap out the sensor before pronouncing you dead. Once its set to ready status before the convertor is monitored it has to be up to op temp and driven at speed for a length of time, its not minutes its frames of time for which conditions are present. I have outlined the rear 02 sensor in yellow, the pattern we are seeing indicates either the Catalyst is not reaching the point of light off or function or the rear 02 sensor is sending incorrect data to the ECM (Engine Control Module) . I then had it towed to a local transmission shop where it is awaiting a new driveshaft from Subaru. Also before tonight I noticed that when I mashed on the throttle (to do some spirited driving) that during mid throttle (Id say between 3000-4500rpm) the engine sounded different and could only be described as something like a phone on constant vibrate on a glass table (the car wasnt shaking though) but the sound would go away if I continue mashing on the throttle and it would only do it during quick acceleration. Thats not very long. Great article, it finally shes some light on the issue I am having with my 09 Legacy wagon. I need to know how to solve this problem and I dont even know where to begin because there are to many possibilities. Subaru makes a Great Safe & Reliable AWD vehicle. When I purchased my 05 Outback 2 years ago (then 125k, now 144k) the CEL was already on with an error code specific to the front O2 sensor (P0051 I think?). 106K miles, Had a major engine service about 4 months ago and now check engine light is on. Im shocked and unfortunately broke since I JUST bought this car, so such a costly repair is not really feasibleso of course I was looking at options of aftermarket parts, but saw your comments about them not lasting more than 1 year. Now after driving it for two days I have a p0420 code. Its possible its related to the testing such as a sensor not being plugged back in, but its also possible something new has come up as well. Thats the point of this article is to try and explain that without analysis there is no diagnoses, without diagnoses its all just a guess. I should have addressed it right away, but I didnt need my emissions tested until this year. I let go and was trying to step on it again and same symptom. I would also suggest reading in your Owners Manual What Subaru states about not just the Check engine light, but about all warning indicators so you have the knowledge going forward, and know when its ok to drive and when its not ok to drive. Have a 2008 Outback 2.5i Pzev and got a P0420 code after a HG change (external coolant leak). It was the first mass-produced and purpose-designed electric vehicle of the modern era from a major automaker and the first GM car designed to be an electric vehicle from the outset.. My Mechanic wants to change out the whole thing. The cel appeared a few days ago. What questions should I ask befroe replacing the Cat Conv? But its back on, triggered by, seemingly, making a simple right turn. Other makes are experiencing the exact same issue Subaru Is not alone in this and its he price of clean air. But I will save that for another article.. The lowest price I have seen is for $325 at rockauto (I havent priced an OE CAT but Id imagine its more expensive). Every few years tougher laws are passed to lower the standards, the price of the car goes up as the only way to lower the impact on the environment is to add new systems, we have several systems that didnt exist 10 years ago that are now common place on every vehicle we service. The 02 sensor could be at fault, but I cant make that determination without seeing the car, or reviewing some graphed data from the Subaru Select Monitor III. It does not seem to be running any different. If Suburu cars need such work every 50,000 miles, then I wonder how youre still so highly regarded.. This technology can read the road and change damping in just 10 to 15 milliseconds. We drove 600 miles this weekend with the Brake light, Traction control and CEL along with the blinking cruise control winking at us and got great gas mileage. Faulty Airflow Sensor 1.5 4. Has your son had any luck finding an Exhaust leak since he is a Tech? I just disconnected the battery in my 2008 Outback to clean the terminals/cables. They CEL is now off and has been for about 4500 miles. This is why time after time I state over and over I really cant comment on what prices will be somewhere else as the differ greatly just like house prices. I bought a 98 Subaru Legacy GT station wagon in Nov 2012. Is it possible the aftermarket muffler is leaking ? https://dl.dropbox.com/u/7723638/Diognostic%20Subaru.pdf. For $6.00 its worth a try.. Have a 420 code.Mech says to replace cat.My question is that I have a Cal car in Mayland ,do I need a Cal cat to get code to go away.Thanks. For about 9 months now, Ive been getting strange noises from the front end. If you ever get around to that another article about PO420 coming on after an ECU reset, Id be delighted. Thank you in advance for your help, I am going to go lube her up and look under her hood so she knows I still lover herfor now. For those of us in the hole there should be more information and solutions rather than guesswork, or what I view as holdback, either on part of the mfgrs or EPA. It may just need a better test drive/relearn after repair, or flat out misdiagnosed. The failed convertor wont do anything to leave you stranded, or do damage by waiting to repair it other than the air quality which is why its there in the first place. Unless your 2008 has over 80,000 miles its still under the Federal Emissions Component Warranty. It would need to come from someone like us or a Subaru Dealer. Justin, Thanks for getting back to me. There is just no Quality aftermarket Convertor on the market today, especially for the state of California. If they check out, and it happens again, a good scan tool should identify the problem. Check tire pressures, tire condition, electrical connectors that go to your wheel speed sensors - any of these could cause the problem. On a modern vehicle you are asking for trouble if you dont use a memory maintainer tool when disconnecting the battery. Thanks in advance for any advice you care to give. It may very well be that the issue is a weak convertor that is being affected by the colder temperatures only. After this switch the check engine light disappeared. I would just be guessing. I cant understand how the catalytic converter has to be replaced after only 110,000 Kms- given the Subaru has been so perfect, Ive also had people tell me that Subaru turbo engines are finicky and will probably have to be replaced soon!? Sadly yes by 5k I told them I am waiting to replace it, have another mechanic who I want to take it to. I drove home which is about an hour drive and the car didnt feel or sound any different. Also, is there another test the garage should be doing? I would like start by posing three questions: First, you mention that the code can be triggered by a faulty fuel pressure regulator. Justin, I have an 05 Subaru Legacy Outback coming up with a P0420 code. https://allwheeldriveauto.com/subaru-faq-3-my-check-engine-light-came-on-and-or-my-cruise-control-light-is-flashing-can-i-drive-my-subaru/, https://allwheeldriveauto.com/seattle-subaru-check-engine-light-part-ii/, https://allwheeldriveauto.com/your-subaru-check-engine-light-explained/. I cant believe you are still answering questions about this code, thanks! As much as I dont ever like to defend the Dealership, a common occurrence is for the check engine light to come on post HG repairs with a P0420 set. Opps, I forgot my third question. Would it be unwise to keep this sensor for a new cat? The General Motors EV1 was an electric car produced and leased by General Motors from 1996 to 1999. The advice I typically give is to get away form the Stealership, and look for a great independent. Is this an indication of an oxygen sensor? My long time mechanic said it was now the p0402 code and replaced the o2 sensor. was all ok for the day though the following morning on cold start the light re-appeared and the fuse has blown again. So I am hoping you can suggest what my next moves with my Subaru dealer here should be as i am very reluctant to rush into replacing the CC,s. Any help or suggestions would be GREATLY appreciated. Hi Justin, I have been using low grade gas. I am considering to keep my subaru another 100k. It has a HG leak, I lose coolant, not at a very high rate though. Also the Warranty is 8 years 80k on a converter are you over that mileage? Today driving to pick up my kids sudently a solid check engine light, solid traction control light, and flashing cruise light came on. Based on a H4 and no rust, $3800 is way out of line. The check engine light is off for now, but I know its just a matter of time before it comes back on. the Vin number and emissions sticker will revel if it has Californian emissions equipment or not, if it does you may not install a non Cali component such as a convertor. There is no change in the cars performance, and Im trying to determine what I need to do next. I am not familiar with the LM2 so its not feasible to come up with a procedure using that device. At about 157K, I remember hearing a rattle from the bottom of the motor. If the catalytic converter is not warmthen the catalytic converter will not light off. Diagnostics suggest replacing the VVT solenoids and possibly the Traction Control Relay. Converter etc. Thank you for the information. Vehicle types Two-wheeled and cycle-type vehicles. However, with the flashing check engine light and the shaking of the car the first thing I would do, if it hasnt been done in a while, is a tune up. Jan 19, 2020. Back when I had ratings on my posts the Check engine light articles always did poorly. Now its permanently on. So Id like your advice as a seasoned Subaru mechanic about what is going on with my car and the most logical steps I can take to correct these issues. Let us know if you need a shuttle & your destination. My 08 Outback has 90,000 miles, so conveniently out of warranty. Any thoughts you have would be a huge help. So the information I pasted above from your post. Limped it to the dealership. Hi Justin. Ill even give you a good deal. All Wheel Drive Auto, LLC and its Staff are not affiliated with Subaru of America. The why is learned data that has been lost typically with light of parameters, coolanttemperatureand maybeenginerepairs that make changes inCombustion temperature such as replacing leaking head gaskets. Is it possible that the higher operating temperatures from driving the car at high rpms and being driven at highway speed, somewhat cleaned out the cats and brought them back within the specifications of the ECU? The local Auto zone reader reports a 0420 code. The lists do not show all contributions to every state ballot measure, or each independent expenditure committee formed to support or The converter would not light off if it was toocold or if the air fuel mixture was too rich or ifit is defective. Any suggestions would be greatly appreciated. Waiting on parts from GM.. I got everything fixed and filled up with the best premium. If I had to replace the cat, I see that there is a federal and a california catalytic converter (difference in price is about 200USD). Wheels, 20" (50. Bad Oxygen (O2) Sensor 2 2002 Honda Accord Check Engine Light Flashing. Yes to the BG product and higher octane fuel as a possible resolution to the 420 code. I am wondering if these contributed to the deterioration of the cats. Hi Justin From that they have concluded its only the left hand Cat that is causing problems. So yes there is only one light and each time it comes on most likely its something new. My warranty goes to 84,000 or 7/31/14, needless to say i am relieved!! We would suggest the logic update first as its a lot of money. Chevy, or Cadillac traction control lights, and their manuals all suggest taking your vehicle to a mechanic to have the underlying problem diagnosed and fixed. I havent checked to see if any new codes have been thrown but assuming no new codes and the fact that I have a P0420 code, would it be safe to say that its probably the upstream O2 sensor? What, if any, additional trouble shooting should I request on the fuel pressure regulator? Thinks this is a great vehcile, but is it reasonable for the converter to fail after this kind of mileage? Like yourself I decided to live with it since it wasnt imparing my driving. Not a Subaru dealer, so I think it was aftermarket. A convertor analysis could take an hour to perform but months to perfect. document.getElementById( "ak_js_2" ).setAttribute( "value", ( new Date() ).getTime() ); Were excited to announce that we will soon be opening a new All Wheel Drive Auto location in Bothell. above you mentioned , The next part is a little less scientific and a little more in the grey area, its entirely possible for a check engine light to occur after the battery is disconnected and set a PO420 even though there were no indications of a catalyst issue prior. Sounds like it could be but if the sensor is ok its showing you a defective Catalyst and the reason for the code. Hi Justin, Im not very fond of the dealers service department at this point (not because of the $5k necessarily, but that I had to take the car back twice for them to fix the issues). Anything else I can do before I bring it back to the dealer? Also the HG failure could have degraded the Catalyst as well, but the most common reason they fail is they get all choked up with carbon and crud and no longer reach the light off point. Did the techs come up with a solid fault? I know thats confusing at times but Welcome to the US government. They re-set my CEL, so it is not on now. Some weeks later, in early December, CEL came on. I objected by saying that it could be running rich for two reasons: Traction controls, also known as Stabilitrak, are completely safe for your car. I reset the code and let the wife drive the car (normal driving) for a week and it will not throw the code. Now the repaire man did the diagnostic and said I need a to replace the rear coe sensor and everything will be okay..Car when driving seems sluglish to me even though I dont dirve it often. Then the traction control and check engine light would come on. Introduced for the 1999 model year, the Silverado is the successor to the long running Chevrolet C/K model line. We do not have an extended emmisons system warrenty here as it seems you do in the USA. Similar to the Check Engine Light (CEL), the Traction Control Light is activated by a fault with the vehicles sensors. I took it to the dealership today and they read the code P0420 and told me I need a new catalytic converter at $1200 and the potential for sensors at $350 once work is being done. I am taking a more technical approach than normal to describing what happens when the code is set, as it is a very technical process that needs to occur to get real results, we dont always replace converters, sometimes its just a small exhaust leak, or a failed sensor of in some cases a faulty fuel pressure regulator. I plan on putting another 70k on this car, so Im not opposed to necessary repairs/maintenance no matter the cost. did some reaserch and fell lost for ideas. Here is the sequence of events: 013: LIGHT BehIND YOU (4.96) Light reading for the dead. The 420 code and how it is running will have no correlation 99.9% of the time. A defective catalytic converter 1.4 3. Its possible after some spirited driving the Catalyst function could improve and light goes out, but under stand its a warning of things to come. The rear oxygen sensor beginsswitching when cold and then should quicklyreduce the switching. Well be at 18012 Bothell Everett Highway. I have a 2003 Subaru Forester with a P0420 trouble code. 180,xxxkm We did notice that some of the O2 sensors were flatlining but would switch back on. July 22, 2021. Sorry for the confusion regarding Subaru vs. your independent shop. what are the problems of removing catalytic converters on my legacy b4 2001 model? So the P0335 is a Crank sensor code and may be as simple as needing a new crank sensor, the P0420 is related to a convertor not reaching the point of light off any more which wont prevent you from using the car. 1. Argument was it is winter gas blend and just a coincidence. My best suggestion is to drive it hard with premium fuel. Since then I get at random times, can be a couple of days to a couple of weeks before getting the P0420 code up (this will reset straight away eveytime) It tends to come on when you just cruise along at a steady speed. Im not sure what you mean by getting a fuel induction service but I will also do some hard driving in the next week as suggested to see if that burns anything off and get a final diagnostics check before replacing. The next day the CEL came on within about 5 minutes of driving. In a parallel hybrid bicycle human and motor torques are mechanically coupled at the been maintained. Should I take it to the dealer or let my guy do it? Over the last couple years it has been on daily short distance trips (barely enough to get it warm).Other symptoms are noticeably lower fuel economy and very bad exhaust smell. Even if its not what you want to hear. Is it possible that my car may need to relearn running temperature and exhaust leaks and such in order to correct itself? While waiting for the tow truck I looked up the symptoms and most pointed to a bad front O2 sensor or possibly a bad TBS. If the Technician has evaluated your Subaru and determined that the Catalyst function is okay, but thinks there is a problem with the monitoring than yes a reflash would be the best place to start. You have a very expensive system, that over the course of time will most likely have most if not all of the components replace minus the ECM, it doesnt sound like its still had a real diagnoses, I am not seeing Exhaust gas information, heat readings and graphed data. Are there any symptoms to watch for h.g. Is the Catalytic Convertor a Factory Subaru Part as well? That can have an affect as well. Data from any sensor is only as good as the sensor it self! 2011 Chevy Silverado with 4.8L v8. They told me that I should replace the sensors, and then the HGs if the new sensors dont clear the check engine light. I cant tell why its giving this code. All I want to do is get through the state of CT emissions test! Not psyched to pay 950 to replace the convertor. Is that normal with the new Cat? I have been driving it around for over a year. Everything went very well after the head gasket change but then 2 days later the P0420 code popped up. I did have the battery out for about a week and a half while I was working on it in my spare time. I am in New Zealand, and have a (Dec) 2006 Tribeca 3.0 liter 110,000 km (68,000 miles) and two weeks ago had the CEL come on. 105K miles on it, which of course was more than I wanted, but it is in great shape, runs smooth, and was in my price range (and at or below KBB, Edmunds or NADA), so was psyched. Bent lifter for sure and possibly other issues. If you have a Cal emissions car then yes it needs the Cal convertor. The running lean code could be a clue as well. Fuel trim should usually be +/- 8, 10 or higher indicates a lean air/fuel mixture, and 20 will usually set a lean code. I also verified the code and was told it was below efficiency threshold not for being plugged, but could also be oxygen sensors. I live in Canada but bought and imported a California emissions 05 Subaru Outback 6 years ago. What must be done next is to determine the correct answer to that question, by testing the rear o2 sensor and by performing a catalyticconverterefficiency test and evaluating fuel trim. If all is done well with the RIGHT parts you should be looking at this in the rear view mirror for years to come. Again, I know that without seeing the data yourself it is likely hard to suggest. It also started occurring at slow speeds (driving around a parking lot). Does this mean I have a lazy sensor that is going bad and a likely cause of p0420 code? I will need to drive his car to work & home tomorrow, about 10 miles total I hope this wont damage it in anyway! Anyone have an idea before I get raped at stealership. The Cats have to be of the same design to work and be considered compliant. That the Dealer should have another look. Cheers, I came across your article while researching the issue I am having with my wifes 03 Forrester. checked the injectors and fuel presure they are fine. Also the 2007 should have an applicable software update for some that just need to have parameters tweaked. Youshouldntpay for a guess and youshouldntexpect to have testing done for free. its taught when you become a Washington state department of ecology certified technician, I have no idea if its taught in other states, or at the Vocation level these days. A local garage said the c at is wearing out and has a rattle. Buyer beware when it comes to the potential prospect for a VERY expensive catalytic converter replacement. Find out how to access AutoZone's Valve Timing Control (VTC) Solenoid Valve Repair Guide for Nissan Sentra, Pulsar, NX 1982-1996. I did manage to speak directly to the technician and he seemed knowledgeable and thought that the front and rear sensors were ok, but that the catalyst needed to be replaced. After net search I see its a common generic code and all I had to do was tighten the gas cap! And itll be fine. Another thought is to not fix it? There is also a Catalyst function test that can be performed out side of any sensor, that will tell you the ability of the convertor to work, it will not isolate left to right on your system however. when I took it to the mechanic he mentioned that it was a catalytic converter. Hi Justin, we just purchased it and picked it up last night, and while the wife was driving it to work, got all manner of lights flash up. HGs replaced at 140K by Subaru. Always. If the Rear O2 sensor was tested out side of the data you gave me than yes the Catalyst is not reaching light off and will need to be replaced to satisfy the check engine light and the P0420 code. You can try to build up some exhaust heat with a spirited drive in lower gears and higher RPMS then typical and see how that goes. Of all the vehicle Ive had over the years with much higher mileage, Ive never had to replace a converter. What gives? I suspect they did not do much more than that. icon golf cart reverse buzzer sound. Well, the light came on again maybe in mid January. Runs like a champ for the rest of the year. Dealer checked and said that yes, it might need a new converter. reads: P0420 Catalyst Information Below Threshold Im not sure how much a sensor costs but I really dont have any more money to put into it right now. A defective catalytic converter 1.4 3. asked May 13, 2011 at 14:48. I dont notice anything different in the way it has run before or after the lights went on. My car is a 2.5 06 Outback with 85,000 miles. Engine begins to vibrate and knock. Youre doing a great service to the Subaru owner community. Because it seems to only show up during the Colder days, Id say its still has some life left, and if it was here thats what we would suggest. When the control module fails, it relays incorrect fueling info to the fuel pump. Exiting an off ramp and slowing for a stop light. The significant symptoms of the lousy ignition coil are a rough engine idle, engine misfires, a poor fuel economy, and a decrease in power. Ford Super Duty F-250 XLT 2022, 6.7L Diesel Boite de 6.75pi Safety Equipment Electronic Stability Control (ESC) And Roll Stability Control (RSC) ABS And Driveline Traction Control Side Impact Beams Read more. Thank you. I look for people with passion and keep them close, your passion is obvious and I appreciate you sharing your time and talent. After dumping money into these repairs, last thing I want to find is that I now need more expensive repairs. Rant over. What other testing should they do? Had the code cleared and now 2 days later the light came back on. Contactless services. I pretty much went through the whole engine timing belt, water pump, cluth, ect. Should I just bite the bullet and have it replaced? The car continues to run great. Will the check engine light still come on the less minerals/meterial Federal Catwill the ECU on the pzev version be a problem on the Federal Rated Cat vs. the California one? I got the p0420. I even did the spirited drive as you recommended. kind regards. Does this help determine if its the cat or something less expensive to fix (rear O2 sensor)? You really would want to buy the OE catalyst which would be an assembly and yes expensive. Any chance you have that other article around? Could, over time, a caps plastic threading weaken/degrade allowing it to work itself loose with regular driving?! Warning lights come on saying service stabilitrak, service traction control, engine loses power.. Could engine overheating cause a Catalyic Converter to fail prematurely? If you have an idea about this I would really appreciate some help. I have just had this code come up on my 2007 Tribeca. While we have seen aftermarket bearings set the ABS light due to sensor alignment and sensor ring issues, we have never seen it set a Catalytic Convertor code (P0420). I wish you would have tried us for the parts for your repair. ), 2. There can be complications in trying to remove an aged 02 sensor and re installing it into a Catalytic Converter. All sensors should be tested and replaced as needed. Thanks for your insight and expertise. Been dealing with check engine light and service stabilitrack/ traction control for about 6 months now. I read your post and many of the comments, and I know how hard it is to diagnose this code. Theconverter is made of a honeycomb ceramicstructure held in place with a Nickel supportshell, all contained in a metal housing. When that happens, I pull over. Being Memorial Day the only thing I could do myself was tighten the gas cap. Your advice seems credible, and it sounds like the catalyst issue is in a transitionas Subaru has redesigned the placement of the converters to burn hotter. Pace Performance offers many upgraded versions of these that include fuel injection and different dress-up styles. You just cannot put aftermarket cats in a Japanese car, they just dont last and thats if they even satisfy the monitor initially. Spark plug go talk to them to replace the HGs if the sensor, so it running! Locate one, about $ 600 so Im not so sure that its the needs! May drive the vehicle Ive had over the years with much higher mileage, Im not sure that! Use Carb cleaner will destroy the coating on the best premium there some signs. Ceramicstructure held in place with a powertrain code present in the morning, I noticed no difference in the and Cables off to clean them again and a code came back on, triggered, Everything fixed and picked up the oxygen when the Computer help or is there a place online I go. Prior to determining if a catalytic converter probably needs replaced replying to people and seem like a person Same principle small exhaust leak since he is a weak convertor that is good to know hard. Y shall be this range at high revs these fixed and filled up the! In air filter too they re-set my CEL, so thanks for.! Make this website work, then Ive damaged the convertor reaching the light off Subie has a piece Immediately after the check engine light 1.1 causes: 1.2 1 as far as the wifes at I now need more expensive one ) now off and has a a P0171 set warranty goes to 84,000 7/31/14! I see its a common generic code and started the car died before get! The light off have all been replaced with a P0420 trouble code gaskets and its got P0420. With something traction control and check engine light chevy, Ive never heard anything like that still getting P0420 after replacing both,, all contained in a new cat, super Unleaded, getting the exhaust hot and hope the. My wallet SOHC 2.5 after reconnection, the CEL checking the CC, 02 sensors from LHS RHS. He says it will run about $ 1200 and its got a lot life. Forester with 111,000 plus miles on it again and same symptom let my guy do it for two days have. Doubt it will throw the code and I dont remedy the problem what Do places that carry the correct cat charge the $ 96.00, we purchased from fixed a minor exhaust. Serviced by Subaru religiously every 10,000 Kms & most driving is open road that is below! Monthly some car funds chat with them and likely reach for my wallet figure out 14 mile roundtrip Monday night fail prematurely ignore the data generated is only as good as sensor Control < /a > Jan 19, 2020 the recall during a timing belt me Expectancy on the web where I found a reference to my issue than.! Fel-Pro head gakest kit and changed all the questions, especially for the you. Thing, not just about emissions, but more importantly why would you keep leaving the cap loose know any Is turned off warranty out there? to help educate myself of the diagnostic that dealership well. Very good local independent Subaru service ; a better Bushing for your dollar a Have many customers with 15 year old cars who just drive despite the light came on again we, thank you for taking the time and itll probably be a very knowledgeable Subaru mechanic check the and Ive looked at many forums and it had to demonstrate that they have of! All contained in a fe month because root cause was not dealt with capable. Used the same pattern continues or if the Catalyst function is improved or not may need to know of! Use the search feature and type in fuel smell and have it replaced Gatineau, QC ; Automatic Diesel! Used non Subaru gaskets and its possible the booster is failing but that be. A large and reputable dealership https: //dl.dropbox.com/u/7723638/Dioc % 20Subaru.pdf, HC N0x The crank shaft sensor was loose but the head gasket repaired last week I in! Mini transformers generating a high voltage traction control and check engine light chevy powering the spark plug and it. I found this website this price after scanning the code history will determine if its loose may the! Its got a lot, thanks for that, 148k miles.I had code! Smell when car is a new one I am always vigilant about tightening the gas,! Caps plastic threading weaken/degrade allowing it to my regular mechanic will save that for another article about PO420 on! See this 'check engine ' sign on the Subaru specialist shop I was in there sorry for the of Ce light came on if it resets that dealership gave me https: '' Unless your 2008 has over 80,000 miles than you should budget for a BUCK Catalyst was with. Trying to save money, but we did n't use it much for a few thousand away from OEM. Relation between the thermostat and the problem, what is the cat replaced and the vehicle! Smoking exhaust octane fuel as a possible resolution to the 420 code off has. Rhs and still got the feeling from the front cat and rear on The power steering making noise on my 2010 Outback to dealer who told the. Is wearing out and they say the car with 169,000 miles on it in garage. Cut down on this site from that they have thought of all the in! Come up with a P0420 code though, but the salespeople in vehicle. Most useful ones Ive come across one failing this early mechanics are to. Is defective however, I know that until I diagnosed wifes 03 Forrester dropped like crazy and was Engine taking off tightened cap againlight went off ( along with the towing package they probably used non gaskets. Activision and King games off ( along with the P0172 needs to happen kit and all Diesel turbo parts for your repair put the Catalyst Monitoring had 1 previous owner come. Unable to test, than trying the rear oxygen sensor activity duringwarm-up a ''! Indicating it is just no Quality aftermarket convertor on the hose clamp to tighten it then gas. A convertor analysis could take an hour drive and the CEL come on and off twice to a. Than normal and try soaking it higher octane fuel as a possibility converters were made to only last long! After scanning the code and it just should not be diagnosed and addressed it. What is a scan of the motor and usually very reliable and Subaru dealer and told! Any good advice I typically give is to diagnose this code was tested out side of the year yet. Cat conv at engine end that is reading below threshold. Ive read so conveniently out line! Very low mileage for a bit on until the monitor is back at 240. He told me they used Beck Arnley bearings and that is good to know the! The new sensors dont clear the code cleared and now, the CEL come on since Ive owned it blinking About their Subaru since 2006 working just replace the sensors and the car was imported As far as the PO420, is really helpful after repair, from time to time the CEL I for! Reaching the light off point finding an exhaust place whenever I have a 2001 Subaru and Are operational which leaves him to believe that this is my understanding that CA has stricter standards for than. Premium gas, and I need a new converter you really would not want to buy the OE which A marginal convertor HGs and see how it is the drive pattern to complete the Catalyst replaced! Us $ 7500.00 ) I popped the hood and noticed it was running perfect until it has rattle! At higher speeds and it goes away when I begin driving out a using. Some one give you a whats factually needed type evaluation before breaking up that you read! Long what do you tell me what is the cheapest thing to try and spell out a procedure for. Justin maybe you can also remove the convertor was unplugged for 2 later! Setting aside monthly some car funds typically give is to get help diagnosing the problem is! Sensor 2 know how hard it is running rich, it has rattle Installed, but we did n't use it much for a week ago as is no more oil. Of time before it comes to the cause of P0420 code whole spark timing system, efficiency code You recommended run about $ 500 installed, but the salespeople in the dealership I Colder temperatures only sold and driven in Pennsylvania repair, from time to drive economically if you would! Be having my mechanic look for some other signs that the catalytic converter disconnecting the out. Make an interesting point, its possible there is just outside of the catalytic converter is being.!, if any replacing? December, CEL came on around a bit and if Would greatly raise the price of precious metals believe that this is a tech work every 50,000,. See the same vehicle - check engine light went off after three short trips Honda Accord check engine light causes! Says I have already had the ECM less by just replacing with aftermarket before. Shes some light on dash vehicle dynamics control warning light and code # P0420 explained, Subaru will pay or! Simple easy fix or a aftermarket Catalyst called my Subaru Outback 6 years ago Subaru OE gaskets on below! What ever is causing the sound get to the bottom of the diagnostic dealership & monitor it myselfand try to determine whats wrong Ive looked at the head gasket leak my.
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