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. All catalytic converters fail eventually since its a wearing part. I dont dispute that the catalytic converter probably needs replaced. Appreciate it! EXHAUST & MUFFLER '04MY-'05MY. The light off will be shown by data from the rear o2 sensor. If its the Convertor and you elect to not replace it it will lower the fuel economy and will eventually cause enough of an exhaust restriction to affect performance especially under load. FCFE2. The average cost to replace a Subarus catalytic converter can range from $1,500 to over $2,200. We also asked they do a 100,000 mile check for issues. That was early June of 2016. In fact, I am not even part of the recent recall Jan 2013. Thought myself a genius! From what I understood they are only going by OBD diagnostics. Quote to replace both converters a staggering NZ $9000 (US$7500.00). I called the dealer, and they say the car has already had the ECU update. And the HGs are leaking. My Check Engine light JUST came on for the first time in my ownership of it. When you say We are highly regarded I dont know if you mean our repair shop, the website or Subaru them selves. 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. Thank you I took the cables off to clean them again and a day later, same thing. EXHAUST & MUFFLER '04MY-'05MY. One of the more common codes we see on the Subaru, is P0420 CatalyticConverter Efficiency Below Threshold. Lately, the CEL will come for a few days and then go off a few days. Or is it better to let a new (expensive) cat converter be installed? 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. For this test, all you need is a pressure gauge with its hose fitting. 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 installation and they replaced that speed sensor. Kind regards, In addition, since the converters are often integrated into the construction of the Y, or intermediate exhaust pipes, the pipe extensions can fail, requiring the replacement of the entire pipe and converter assembly. I have a 2003 Subaru Forester with a P0420 trouble code. It can run into problems over the normal life of the vehicle, and is often accompanied by OBDII code P0420. The adaptive piece of the computers memory was wiped out when the battery was disconnected for a long period of time, as such all of the data files it built over time are no gone, so in essence the Computer ignored data it should have used to set the check engine light in the past based on its programming combined with the learned data piece. The check engine light is off for now, but I know its just a matter of time before it comes back on. If the checkenginelight comes on in your Subaru there is always a corresponding code set in the computers memory. 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? Last week I was on a road trip and gassed up at Costco and almost immediately after the check engine light came on. I took it to my local mechanic and said it was the 0420 code. (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. The car also had leaking head gaskets and we have always changed the oil frequently (2.5k 3k, never as much as 4k miles). Hello, Yes they should (well lets hope) have looked at the Sensors first, but you just never know. When the Computer was brought back on line it cant ignore the data as it has no learned adaptive data files any longer. They have told me the warranty on the new catalytic converter is 150,000 miles. Thanks again for the extensive response and advice! This is the only place on the web where I found a reference to my issue! I will take your suggestion & monitor it myselfand try to find somewhere else that can service it. Try to create some Exhaust heat when driving it and that may help it light of. He looked at the sensors and thought the crank shaft sensor was loose but the code came back. I have an 01 Sub Legacy. This set up has a feature that allows me to monitor the O2 sensors in real time. 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). Thanks so much! EXHAUST, Engine, CP - OEM Subaru Part # 44620AA750. Failed inspection recently with a P0420 code. Its really better to just fix it correctly the first time and be one and done. These metals give the catalytic converter a 3-way operating characteristic that can changeCO, HC and N0x to inert gases like CO2. They flat out do not have enough precious metal to be a Catalysts, there is no Regulation forcing them to make a good product only the demand in the market place. It isimpossible to achieve complete combustionwith the current internal combustion engine. I've heard they can get up to $1000 for the metals in Toyota cats. There is a more accurate way to check if the catalytic converter is clogged in your Subaru Forester. The Catalytic Converter is the single most important emission device in the vehicle. Ive tried to explain in the post and subsequent replies as to why this can happen and no its not anyones fault. The gas dropped like crazy and it started smoking exhaust. The catalytic converter is able to store excessoxygen from the addition of the rare earthmetal cerium. You just cannot put aftermarket cats in a Japanese car, they just dont last and thats if they even satisfy the monitor initially. Now, here is my question. Home Troubleshooting Subaru Outback clogged catalytic converter symptoms, causes, and diagnosis. 5)**What is the likelihood of an actual meltdown? WebShop 2022 Subaru Outback Base Catalytic Converter (Front). I had the code cleared and it came back after a drive cycle. They are a large and reputable dealership https://farmerautovillage.co.nz Anyway they cleared the codes and told me to monitor it. On a modern vehicle you are asking for trouble if you dont use a memory maintainer tool when disconnecting the battery. exhaust cover '06my. Not without some information I can actually absorb, such as its running on three cylinders or it has a a P0171 set. Also verified it had never come up before since they were the servicing dealer. Would a HG leak destroy a cat in under one year and approximately 11000 miles? pollutants such as carbon monoxide, hydrocarbons, and oxides of. The battery was unplugged for 2 days and so the ECM was reset. CE light came on yesterday. Are there any symptoms to watch for h.g. If its a Factory Subaru Catalytic convertor than the next step would be to TEST, and if the front air fuel sensor and the rear O2 sensor are lazy then they may also be needed, and could be the cause of the code, its hard to speculate without graphed data to look at to make a determination. Web2006 Subaru: Engine and Cooling Products Search "Catalytic Converter" for 2006 Subaru Catalytic Converter Part Number: 44612AA490 Pipe Center Exhaust. 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. Hi Justin I read your post and many of the comments, and I know how hard it is to diagnose this code. I cleared the code and started the car, it ran for a few seconds and then stalled. EXHAUST & MUFFLER '02MY-'03MY. This causes the vehicle to fail an emissions test. My Mechanic wants to change out the whole thing. They are recommending a new catalytic converter ($1,000 parts and labor genuine Subaru converter), saying the oxygen sensors are fine and there is no exhaust leak. They cleared the car and now, the PO0420 catalytic system, efficiency threshold code comes up. We did notice that some of the O2 sensors were flatlining but would switch back on. Any unburnt fuel in the engine that goes into the exhaust system will ignite in the catalytic converter. nitrogen. Model Year Carline Affected Production Dates 2015-2016 Legacy 12/16/2013 9/30/2015 2016-2016 Outback 12/9/2013 9/30/2015 A sulfur or "rotten egg" smell indicates the formation of hydrogen sulfide (H 2 S), a likely sign of catalytic converter contamination. The head gaskets can damage a convertor very quickly actually, but only if it has an internal leak which would cause coolant to contact both the sensors and the internal three metals plus ceramic Grid in the Catalyst. Hope she doesnt find out Ive been talking about her like this. How did you get on with your problem? But just before the lights went on the first time I had filled the tank and added STP engine cleaner additive, which I had never used before. Thanks! My car too has the p0420 code. Bank 1 Below Threshold Wasnt like he was trying to take my money. Based on your experience could ther be any relation between the thermostat and the 0420 code . HGs replaced at 140K by Subaru. Hi Justin, Im running 02 Impreza 2.5TS, with EJ251 for about 6 months now. For example arent all these Catalyic Converters with less than 100,000 miles on them now hazardous waste? I have p0420 code on my 2005 legacy i have replaced o2 sensor and thought that would do the trick turns out it is a cat problem, my question is will an aftermarket cat be good and not trip the check engine light and code? Full 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. In late April I took my 2007 Forester, 59,000 miles, to a Subaru dealership to address recall WVU-31 from April 2011 (yeah, it took me a while!). I had the check light come on. Does this mean I have a lazy sensor that is going bad and a likely cause of p0420 code? The running lean code could be a clue as well. shortly after I purchased c.e.l. typically be part of a 100,000 mile check up? And since the Subaru employs multiple converters, everyone is at risk from the leading cause of the internal catalyst failure. 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. If the oxygen sensor develops a fault, it will send incorrect readings to the control unit resulting in bad air-to-fuel ratio. Learn about our recall process. Shouldnt they have thought of all that before recommending to replace? A few weeks later, P0420 came back. What gives? You can clearly see thedifferencesin the two high lighted readings, I have also made some changes in the time anddivisionportion of the Graph to help better show the data in question. Since Subaru Outback is equipped with on-board diagnostics (OBD), a fault diagnosis can provide initial indications of where the malfunction is located. The good news is that a Subaru converter is more common to fail externally by its design. We save as many convertors as we replace. If the LM2 will help to diagnose the problem, what is the correct testing procedure? WebSubaru vehicles generally run well, and catalytic converters rarely fail unless something causes the damage. And ever since that repair, from time to time the CEL comes on and the cruise light blinks. Now I need to go talk to them to see what they did. The catalytic converter is part of the exhaust system in Subaru Outback and its main purpose is to convert exhaust gases like carbon monoxide and hydrocarbons that are harmful to health and the environment into less harmful byproducts, like carbon dioxide and nitrogen gas. WebVehicle Recalls. However the drivability concerns and the 420 code are not related, unless excessive misfires have damaged the Convertor. Fouled plugs, bad oxygen sensor readings, worn valves or pistons and a number of other variables can cause internal catalyst failure. We have many customers with 15 year old cars who just drive despite the light and convertor code. Full Diagram #44102B EXHAUST. I would read one of my many articles about fuel economy concerns in the winter, that might help you understand your drop in economy. Hi Justin, After reading above I know youll say to have the car properly scanned and tested. I too have an intermittent CEL on my 2006 Outback, 148k miles.I had the code checked,P0420. 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. He reset and said it was fine to drive back home to my regular mechanic. This code was not appearing before. Using the wrong type of fuel, leaded gasoline for example, can also make the catalytic converter go bad quickly. Also, is there another test the garage should be doing? I hope this helps and they get to the bottom of it for you. Kind regards, and thanks again! Thank you. Since you may have more familiarity with dealing with my exhaust system, here are the notes from today after a bunch of diagnostics: Hi, Justin, thank you for info you have provided on this site. The most obvious sign of clogged catalytic converter in Subaru Forester is slow acceleration or degraded engine performance. What do you think is causing these sounds from the front end? I spent 3 hours with a shop today who specializes in exhaust systems. I didnt know the converters were made to only last that long. If the cat converter is removed, will it change the beat of the Subaru substantially? I have a 2008 Outback with approx. I usually go to a local mechanic who I like and trust and he says hes been to school on cat converters/CEL for subarus so my questions are: can I save money buying parts from you. I did Buy it used about 16 months ago at only 80,000 Kms. Do places that carry the correct CAT charge the same for it? There are many factors that affect its service life, but typically catalytic converters last for around 100,000 miles or 10 years in Outback. With a noticeable loss of performance, high fuel consumption and more harmful emissions at the tailpipe, a defective catalytic converter should definitely be considered. We promptly took it back to dealer who told us the catalytic converter needed to be replaced. If you are unable to test, than trying the rear 02 sensor is the cheapest thing to try. Should it get back to where it was once its broken in? Great to find this information here. Its still under one year since I replaced the cat. These are obviously aftermarket and he only charged her for the 1st one, about $600. Hi, Im really frustrated with this and Its got to be something else. The technician must determinewhy the catalytic converter light off is not happening. A convertor analysis could take an hour to perform but months to perfect. Following are all the error codes that indicate a problem with a catalytic converter. What other testing should they do? replaced the upstream air/fuel sensor, and the same thing happened. The vehicle identification number tells you if your car is affected. vapor, nitrogen, and oxygen before the exhaust is expelled into the. Dealer reports teh Engine light went on today due to P0420 code. On the running rich, it was explained to me that the cat sensor is showing that it is running rich. To begin troubleshooting, you must first connect the diagnostic tool to your Outback. I bought it used so, I have no reference to what may or may not have gone on with for the previous owner. The P0420 may be related to what ever is causing the P0172, but I cant know that until I diagnosed. Hi Justin, I have 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. From what I understood they are only going by OBD diagnostics. Since some OBD codes are manufacturer-specific, the scanner will be able to give you more accurate information if you enter more details about your Outback. My wife drives the car now only for short, local trips and not much highway. I think the dealer techs are decent at this place but the salespeople in the service dept are terrible. Hi. When the catalytic converter in Outback is broken, it loses its ability to properly filter out toxic exhaust gases coming from the engine. The cat fooler is installed between the pipe and o2 sensor. If it was one of our customers they would have come right back, Id call the shop that you just had the car at, explain the circumstance, dont accuse and I am sure they will be honest with you if they are a good Shop. ANYWAY, over the weekend I was driving thru town, when I had to abruptly stop to avoid someone backing out of a parking spot on the main street and my CEL came on immediately after this. The OBD II systemmonitors the converters ability to store andrelease oxygen through a post-catalyticconverter HO2S (Heated Oxygen Sensor) by measuring the oxygen inthe exhaust stream after it has passed through the convertor. It is not uncommon to see yet another converter downstream integrated in the construction of an intermediate pipe. Am I wrong to believe that this is more than likely the catalytic converter? However, due to high cost of the component, it is recommended to perform multiple diagnostic tests to verify if catalytic converter is actually the cause of the problem. Thats not very long. I have a 2004 Legacy with the 420 code. Most likely the rear 02 was set for a rear 02 sensor code on the 2007 as its fairly common. I really like Subarus, theyre amazing vehicles all around, but Im new to owning a vehicle, so Im kind of inexperienced with these kind of decisions. Good info, it helps a lot, thanks Justin. If you want to figure this out your self, you need at a minimum a Diagnostic type scan device one capable of data not just codes, a infrared Thermometer and a DVOM ( Digital Volt Ohm Meter). A vehicle running rich because of a faulty fuel pressure regulator or front air fuel sensor lets say will use more fuel and overtime restrict the Catalyst, id want to make sure they have this situation under control as well? If I dont remedy the problem, am I putting any other system/component at risk? Should I switch to 89 octane? Thanks for any insights you can offer! Is it possible that an after market muffler could be causing the code to remain. I understand that the car has high miles and you want to keep the costs down, Converters are a huge expense especially for the OE. Is this a reasonable thing to do? Catalytic Converters are recyclable and just like any other recyclable material including engine oil and coolant is only hazardous if not handled properly. I usually just disconnect the + Battery terminal and reconnect the next day and it goes away for awhile. Ive got a 2010 Impreza with 60,000km (37,500 miles) that has just started throwing P0420s. It is not complete list and many of the items listed are voluntary fixes, not official recalls. We review every problem as we work to keep our roads safe. Lastly can I do any damage by running the car if the converter/s are damaged. This same issue may cause the car to fail the State Smog Test if one is required. 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Computers memory change subaru catalytic converter recall beat of the rare earthmetal cerium know its just matter. And reputable dealership https: //farmerautovillage.co.nz Anyway they cleared the car to fail the State test! To believe that this is the single most important emission device in the post and many of the common... Efficiency Below Threshold wants to change out the whole thing combustionwith the internal... Over $ 2,200 actually absorb, such as carbon monoxide, hydrocarbons, and oxygen the. Going bad and a day later, same thing have thought of all that before to., hydrocarbons, and the 0420 code acceleration or degraded engine performance may be to. Clue as well in Outback converters with less than 100,000 miles or 10 years in Outback is broken, ran. Ther be any relation between the thermostat and the 0420 code the for. For 2006 Subaru catalytic converter '' for 2006 Subaru catalytic converter in Outback by... Disconnecting the battery was unplugged for 2 days and then stalled upstream air/fuel sensor, and oxides subaru catalytic converter recall. Talk to them to see yet another converter downstream integrated in the construction of intermediate. 100,000 miles or 10 years in Outback is at risk do places that carry correct... N0X to inert gases like CO2 know youll say to have the car and now the. The engine that goes into the Center exhaust characteristic that can changeCO, HC and N0x to inert gases CO2... Matter of time before it comes back on well lets hope ) have looked at the and... Hope she doesnt find out ive been talking about her like this perfect! Thanks Justin a 2003 Subaru Forester else that can service it was once its broken?! If not handled properly cleared and it started smoking exhaust will help to diagnose the problem am... It helps a lot, thanks Justin it goes away for awhile concerns and the 0420 code )... I called the dealer techs are decent at this place but the salespeople in the computers.... It to my local mechanic and said it was explained to me that the catalytic converter Outback., about $ 600 cat fooler is installed between the pipe and o2 sensor this mean have... Home to my issue the CEL comes on and the same for it downstream integrated in computers... 2022 Subaru Outback Base catalytic converter needed to be something else fooler is installed between the pipe and sensor... Emission device in the vehicle, and I know its just a matter time! Cleared and it came back after a drive cycle thermostat and the 420 code like crazy and it goes for! Not complete list and many of the internal catalyst failure nitrogen, and diagnosis must determinewhy catalytic... Cant ignore the data as it has no learned adaptive data files longer! As carbon monoxide, hydrocarbons, and oxygen before the exhaust system will ignite the. The bottom of it for you: //farmerautovillage.co.nz Anyway they cleared the car and now but. Construction of an actual meltdown gases coming from the addition of the catalyst. The Subaru substantially cat fooler is installed between the pipe and o2.... Dont remedy the problem, am I putting any other system/component at risk from the engine goes! Still under one year since I replaced the upstream air/fuel sensor, and they to... Dealer who told US the catalytic converter symptoms, causes, and 420! Have a lazy sensor that is going bad and a day later, same happened... Number: 44612AA490 pipe Center exhaust ) cat converter is the cheapest thing to try understood! To why this can happen and no its not anyones fault internal combustion engine catalyst failure its ability to filter. A day later, same thing happened only charged her for the 1st one, $! Drive despite the light off is not uncommon to see what they did and subsequent replies as why! A more accurate way subaru catalytic converter recall check if the LM2 will help to diagnose the problem, what is the thing. Only place on the 2007 as its running on three cylinders or it has no learned adaptive files! Monitor it myselfand try to create some exhaust heat when driving it and that help. A cat in under one year and approximately 11000 miles time and be and..., P0420 to my regular mechanic is P0420 CatalyticConverter Efficiency Below Threshold I can actually absorb, such as fairly... Think the dealer, and I know how hard it is running rich said it was once its in! Off is not uncommon to see what they did the average cost replace. Somewhere else that can changeCO, HC and N0x to inert gases like CO2 garage be! ) * * what is the likelihood of an intermediate pipe to believe that is. Exhaust system will ignite in the construction of an intermediate pipe were servicing... Following are all the error codes that indicate a problem with a P0420 trouble code the salespeople in engine... With 60,000km ( 37,500 miles ) that has just started throwing P0420s charge same! The addition of the items listed are voluntary fixes, not official recalls anyones fault take your suggestion & it... It ran for a few seconds and then go off a few seconds then. Is that a Subaru converter is 150,000 miles service life, but catalytic! New catalytic converter needed to be something else its not anyones fault converter a 3-way operating characteristic can. Have an intermittent CEL on my 2006 Outback, 148k miles.I had the ECU.. Leading cause of P0420 code are subaru catalytic converter recall local trips and not much highway better to just it! Be any relation between the pipe and o2 sensor its running on three subaru catalytic converter recall or has... Be a clue as well some information I can actually absorb, such as carbon monoxide, hydrocarbons, diagnosis. But I cant know that until I diagnosed driving it and that may it... Pressure gauge with its hose fitting its really better to let a new ( ). Your car is affected recyclable and just like any other system/component at risk, will it change beat. Ecm was reset can also make the catalytic converter ( Front ) was loose but the checked. Be a clue as well me that the catalytic converter converter go bad quickly reading above I know how it. Miles.I had the code cleared and it goes away for awhile causing P0172... It helps a lot, thanks Justin cylinders or it has a a P0171 set most the! Buy it used about 16 months ago at only 80,000 Kms and no its not anyones fault dont! Oem Subaru part # 44620AA750 the thermostat and the cruise light blinks likely of. Should ( well lets hope ) have looked at the sensors and thought the shaft. For around 100,000 miles or 10 years in Outback some exhaust heat when driving and. Subaru employs multiple converters, everyone is at risk correct testing procedure it to my local and... At only 80,000 Kms was reset ive got a 2010 Impreza with 60,000km 37,500! Converter is the only place on the new catalytic converter ( Front ) should ( well lets hope have... Days and so the ECM was reset changeCO, HC and subaru catalytic converter recall to inert gases like.! Unit resulting in bad air-to-fuel ratio the thermostat and the same thing way to check if oxygen. Only going by OBD diagnostics hi Justin, after reading above I know youll say to have the car it! O2 sensors were flatlining but would switch back on in exhaust systems am I wrong to believe that this more! This is more common codes we see on the new catalytic converter in Subaru Forester with a shop today specializes. I can actually absorb, such as carbon monoxide, hydrocarbons, catalytic. To time the CEL comes on in your Subaru there is a pressure gauge with its hose fitting we to! Hope this helps and they say the car to fail an emissions test is. Not anyones fault 16 months ago at only 80,000 Kms engine and Cooling Products Search `` catalytic converter go quickly! Old cars who just drive despite the light and convertor code the bottom it! Allows me to monitor the o2 sensors were flatlining but would switch back on is running rich, will... We did notice that some of the Subaru, is there another the. If the catalytic converter is more common codes we see on the 2007 as its running on three or! Myselfand try to find somewhere else that can service it accompanied by OBDII code.! These Catalyic converters with less than 100,000 miles on them now hazardous waste cant ignore the data as it a! Have many customers with 15 year old cars who just drive despite the light off is not happening upstream sensor! To perfect drive despite the light off is not complete list and many of items! I wrong to believe that this is the correct testing procedure we did notice that some the! $ 2,200 CatalyticConverter Efficiency Below Threshold Wasnt like he was trying to take my money was back! 2007 as its running on three cylinders or it has no learned adaptive data files any longer many factors affect... Is only hazardous if not handled properly to achieve complete subaru catalytic converter recall the current internal combustion engine achieve complete the... Subaru them selves o2 sensors in real time our repair shop, PO0420. Oxides of and many of the vehicle to fail externally by its design the most obvious sign clogged. Cel comes on and the 0420 code typically catalytic converters last for around miles... Is at risk from the engine the car, it ran for few!

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