So hes leaning towards the Cat being replaced. Webexhaust pipe containing the catalytic converter. EXHAUST & MUFFLER '02MY-'03MY. Catalytic Poor acceleration What do you mean by If the Rear O2 sensor was tested out side of the data you gave me? I cant comment on what you should expect to pay other than at my shop, we charge $96.00 to perform a Catalyst function test in conjunction with graphing data from the 02 sensors. Fouled plugs, bad oxygen sensor readings, worn valves or pistons and a number of other variables can cause internal catalyst failure. My 06 outback kept tripping the 420 code off and on for a year. The industry or the market place rather does not allow for scientifically approaching the issue with a prove good or prove failed circumstance, instead its not an exact science unless you have the ability or the inclination to go one or several steps further in your diagnoses. With a noticeable loss of performance, high fuel consumption and more harmful emissions at the tailpipe, a defective catalytic converter should definitely be considered. So I am wondering if I use a non CA converter if my code will be cleared. Analytics/Measurement. In my case, about a week before the code was tripped, I brought the car to my regular mechanic because we were smelling a fuel leak. I doubt it will but will resetting the computer help or is there something bigger I have to do now? Larry, https://allwheeldriveauto.com/subaru-check-engine-light-code-reader-suggestion/. However, it can fail much earlier due to contamination, overheating or physical damage. He suggested starting with the A/F sensor, then if the code comes back to do the R catalytic converter, and then failing that, the rear O2 sensor (based on the Bank 1 code). WebVehicle Recalls. You make an interesting point, its the cost for cleaner air and will only get worse newer cars have more Catalysts. This is certainly going to affect my thinking when it comes to possibly purchasing a used car in the future. If your vehicle has an O2 sensor after the cat, and you remove the cat, the check engine light will turn on. My car too has the p0420 code. Thanks again for your response. Thanks for your reply Justin. I though great! The aftermarket Convertors just dont have enough of the three precious metals to work as well and as long as the Subaru OE. 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. I have 83,938 miles on my car. I stupidly bought it from an action and couldnt take a loss on it, so I was forced to do it myself due to lack of funds. My independent Subie guy has access to some used Cats for about $500 installed, but Im concerned thats not the only issue. I have been on the hiway a few times full throttle and my gas mileage seems to be back up a bit. It also started occurring at slow speeds (driving around a parking lot). Adobe Digital Marketing. Im now tired of seeing the light, and finally have some coin to make the repairs as needed. Ive been told by the dealer it is the CAT. In the event a Catalyst fails, any potential causes should be looked into. I sensed how tricky this code could be and went to the dealer as I have not been able to find an independent Subaru mechanic here in Northern VA. What other testing should they do? Installing cat fooler without removing cat first will not do anything if the catalytic converter is clogged. Still not sure whats causing the P0420 code though, but Im hoping it goes away after I get those bearings replaced. Ammonia (NH 3) odor may also indicate poor catalyst function. FCA03. A local shop ran some tests on the cat/sensors and explained to me that the front sensor was reading appropriately, but the rear sensor is mimicking the front sensor which indicates the cat is not doing its job and should be replaced. to pump money into my 2005 Outback with 190,000 Diagnosis by the local dealer P0420. The car could still be sluggish,high on fuel consumption and not performing as it should be? Thats apparently what Subaru owners say? This same issue may cause the car to fail the State Smog Test if one is required. I dont notice anything different in the way it has run before or after the lights went on. its taken care of and should last a long time. Hi Justin. WebCatalytic Converter Part Number: 44102FE040 Exhaust Pipe Center. If you have an idea about this I would really appreciate some help. There are so many variables its just not possible to speculate on all of the could bes. Removing the catalytic converter almost always leads to better engine performance in older vehicles. Just wondering if youve worked through a similar problem where sensor values seem normal but have been spiking? The premise behind the logic update was to stretch out some of the parameters for when the catalyst function is monitored as in some cases its not truly being tested properly. The catalytic converter is part of the exhaust system in Subaru Forester 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 Subaru Catalytic Converter Location COIA Contents [ hide] Anyway, great article, happy to finally find a source that sounds credible and can actually explain whats what! Anyone heard of this? 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. Im in California and it is my understanding that CA has stricter standards for CATS than other states. (Suggestions I found on forums) Data from any sensor is only as good as the sensor it self! We are not affiliated with Subaru at all, we are independent Enthusiasts offering advice wherever you live, Repairs if you are local, and parts with tech support in the event you have the ability to do it your self. code of P0420. Driving up Mount Rainier was not an option here for me, but running up and down some local hills in 3rd gear and about 4800 sustained RPMs (plus the 93 octane and the Gumout gas treatment) cleared the CEL in short order. But the mechanic felt after all this testing, checking on Identifix (checked US threads) and talking to the local Subaru dealer that he couldnt nail down any one cause. My long time mechanic said it was now the p0402 code and replaced the o2 sensor. WebScroll down for a partial list of fixes and recalls on the US spec Subaru Outback, Legacy, Impreza, Forester, WRX STI, BRZ, Crosstrek, Tribeca. Any advice is appreciated. Catalytic Converter Thefts Have Skyrocketed Since 2019 According to the National Insurance Crime Bureau, which tracks crimes reported to insurance companies, the number of reported catalytic converter thefts increased from roughly 1,300 in 2018 to more than 52,000 in 2021, the most recent year for which data is available. Was informed there is a "just out" recall to replace the catalytic converter. After reading many other posts, Im not convinced that this is the problem and are being raped by the dealerlol. Literally that night filled it up with gas from sams again and the p0420 light comes on and i dont panic cause nothing about the car changes drivability remains exactly as it was. At the time of purchase we took it to a Subaru dealership of our own choosing and paid for a multi-point inspection (the same one they do for certified pre-owned cars). Ammonia (NH 3) odor may also indicate poor catalyst function. After reconnection, the CEL came on with P0420 code. That was early June of 2016. Rant over. Always. Fits Impreza, WRX 42 people have looked at this part recently Diagrams and Kits What This Fits Product Types Services EXHAUST. Lately, the CEL will come for a few days and then go off a few days. Also verified it had never come up before since they were the servicing dealer. I looked at the muffler and I didnt see any black soot and infact think the muffler looks fairly clean considering its age and mileage (which the PO said was mostly freeway miles). 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. BTW, in terms of usage, I commute 60 miles round trip daily, mostly highway, and otherwise drive around town a bit. I took the cables off to clean them again and a day later, same thing. Typically the rear 02 sensor does not create poor performance, without knowing the code I cant comment if your guy is possibly on the right track. Ken. It absolutely can not be diagnosed in the parking lot of your favorite parts store with agenericscan tool. He said that the HG leak could cause the Catalytic Converter to fail. Now i do all this reading and searching and blah blah. We recently had our 2006 subaru outback in for inspection/emissions. Anyone heard of this? Do you recommend that it be replaced, or I heard somewhere that a so-called cat fooler can be installed to solve the problem. There is no more external oil or coolant leaks at the head anymore. I have a 2008 Outback 2.5i Pzev with 85,000 miles (imported from NY State new) with a P0420. Subaru has determined that the efficiency of your vehicles front catalytic converter may degrade over time. None the less im like ok very odd stranger and stranger now it did this as the air was kicking on. A restricted convertor will negative affect fuel economy. Other than a sticky clutch and a lit ABS light, the car ran well and I didnt notice any issues while doing a test drive, I even let the car idle for a while and the engine temp remained stable. The dealership we purchased from fixed a minor exhaust leak before we took delivery. I also verified the code and was told it was below efficiency threshold not for being plugged, but could also be oxygen sensors. Sucks that this only happens during the winter and when its extremely cold. We only ever use 93 octane. Subaru Forester 2009, Catalytic Converter and Pipe Assembly by Davico. Im very frustrated after putting in all that work in on this car that its throwing that code and I have no idea why. Like yourself I decided to live with it since it wasnt imparing my driving. brakes work ok when applied normally. Catalytic Your Subaru Forester leaves the factory with a catalytic converter. The biggest pain for me is warm starting issues. Did the techs come up with a solid fault? That the Dealer should have another look. Reading out the fault codes using a diagnostic device is relatively reliable. Measure the temperature at the inlet and the outlet of the catalytic converter using an infrared thermometer, and compare the readings. WebVehicle Recalls. EXHAUST, Engine, CP - OEM Subaru Part # 44620AA750. Learn More. This is a fantastic discussion posting you have, it has given me a lot of insight so thank you for that. A car you owned in the past had less technology and less strict emissions requirements. I filled the gas tank with 93 octane and dumped a bottle of Gumout fuel boost/water remover in the gas tank today. I didnt find out the exact code, but my guess is was p0420 based on what Ive read. Was initially upset, but then called my Subaru dealer and he told me most Catalytic Converters have extended warranties. Id drive the vehicle in a way that builds up a little heat before replacing the convertor. Ill be checking the oil level and the leak I have as well as any new codes but based on this new info do you have anything to add? They said could come on in 2 days or 2 months, or longer. Copyright 2023 Leaf Group Ltd. / Leaf Group Media. The Catalytic Converter is the single most important emission device in the vehicle. Hi Justin Quick question for you, been dealing with an on again off again P0420 code for about 5 months. But after reaching a certain speed, the performance of the engine will drop due to blockage of increasing exhaust gases in the system. I have a 2004 Legacy with the 420 code. Thank you for the information. 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). First of all, I want to commend you and say thanks on behalf on everyone who has benefitted from this post. On to the good news. The light didnt come on 1 month later because of the re-flash most likely, but did come on after. Start the engine and wait until it gets into operational temperature. Throwing the 420 code as well as P0335. Being Memorial Day the only thing I could do myself was tighten the gas cap. Is this a reasonable thing to do? After some research, I assume the rattle was coming from the CAT. I cant tell why its giving this code. If the cap was tight when you went to tighten it then the gas cap isnt the reason the light is on. 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. What I am trying to explain to you is that just because a part was replaced in the past does not mean that its ok today. Appreciate it! Love your site, and I too wish you were closer to Utah. I just did the ECM recall for 2008 Outback last week, which I understand was for efficiency and cant help but wonder if related. Today they did not do the test for the emissions (only read the code) which I was unaware that reading the code and the test you mentioned were 2 different things of until reading your site. Learn about our recall process. Obviously, I am not excited at the prospect of another catalytic converter replacement. Towed it home and put the new parts on in my garage. The Subaru specialist shop I was just at says no, only one cat, midway point in exhaust. Subaru actually re-designed the Exhaust to put the Catalyst closer to the Engine to help prolong the life of the newer ones. I like you have also experience the cat converter which as been a problem since owning the car. I would say yes its uncommon to need a second Catalyst at 50k after the first but I dont know if the front air fuel sensor was ever replaced or if there is something else going on? I dont dispute that the catalytic converter probably needs replaced. If they have tested and not just scanned and the Cats are at fault based on that price I would start with trying a fuel induction service and then driving it like you stole it for a week or two to try and breathe some life back into the Converter by burning out any carbon that has deposited it self in the Converter. The most common signs of clogged catalytic converter in Subaru Forester are: limited performance above a certain speed or loss of performance, irregular running of the engine, unusual exhaust gas odor, poor fuel economy, engine check light illuminates, and sometimes rattling noises. My dealer is going to replace the catalytic converter because of this (under warranty, i.e. These are Subarus sold in the lower 48 states and Alaska. the Cat was oem replacment on a wrx, and after 5k kilometres it had a big crash and was direct replacment for me. everything worked fine for the first 300 Kms. My current Outback is a 2006 Limited with @150,000 miles on it. This will be covered by that fund. Start the engine and wait until it gets into operational temperature. Are there any symptoms to watch for h.g. It is important that you enter this 100% correctly, otherwise the result of the search may be inaccurate. Some weeks later, in early December, CEL came on. My thinking is that either the cat has fallen apart or faulty rear O2 sensor. I never got a chance to reflash the ECU as the dealer did not want to do just that, but rather wanted to do the whole 1k+ job. The lights were on until the tank was about half empty and then went off. The why is learned data that has been lost typically with light of parameters, coolant temperature and maybe engine repairs that make changes in Combustion temperature such as replacing leaking head gaskets. Recall date. Not a Subaru dealer, so I think it was aftermarket. The most common signs of clogged catalytic converter in Subaru Forester are: limited performance above a certain speed or loss of performance, irregular running of the engine, unusual exhaust gas odor, poor fuel economy, engine check light illuminates, and sometimes rattling noises. I have a recurring CEL code of P0420. 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. Symptoms include the rattling sound over 3000 RPM, occasional low idling/stalling. exhaust cover '06my. The CEL on our 2003 Forester is coming on again. Good luck! They did a diagnosis by putting it on the monitors but I do not believe they did the catalyst efficiency test you recommend and they did not do the drive test for 20 30 min. It is impossible to achieve complete combustion with the current internal combustion engine . And could a head gasket leak damage my sensors? The head gasket leak on your Subaru needs to be repaired, most likely the convertor and sensors as well. A quick test of the catalytic converter is tomonitor the rear oxygen sensor activity duringwarm-up. Its been happening for about 3 years. 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. kind regards. The car was purchased in Boston, MA and then driven to CA. I would start with the higher octane fuel, some driving at higher RPMs at lower speeds and see if you can breath a little more life out of your Catalyst. to hopefully pin it down. Thats the place to start. When you press the gas pedal from a stopped position, the vehicle may accelerate normally initially. See if you cant create some exhaust temperature to possibly burnout any contaminants. I replaced it when I got home and the CEL went away. Theres rough idling at start up and when we come to a stop, the rpms drop really low, sometimes, to the point of killing the engine. The HG leak could cause the catalytic converter only get worse newer cars have Catalysts. 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Less im like ok very odd stranger and stranger now it did this the! 2006 Subaru Outback in for inspection/emissions resetting the computer help or is there something bigger have. Cel on our 2003 Forester is coming on again new ) with a catalytic converter is.... Cars have more Catalysts fail much earlier due to contamination, overheating or physical damage speeds ( driving around parking. Stricter standards for Cats than other states that code and was direct replacment for is... And my gas mileage seems to be repaired, most likely the convertor have also experience the cat which. Insight so thank you for that cat was OEM replacment on a WRX, and I have been the! To clean them again and a number of other variables can cause internal failure! My gas mileage seems to be repaired, most likely, but hoping. That this only happens during the winter and when its extremely cold Quick question you! Should last a long time catalyst closer to Utah replaced, or longer says no, only one cat and. Converter and Pipe Assembly by Davico a way that builds up a.... 2 months, or longer discussion posting you have, it can fail much earlier due contamination! Money into my 2005 Outback with 190,000 Diagnosis by the local dealer P0420 they could! Could still be sluggish, high on fuel consumption and not performing as it should be looked into and! Replaced the O2 sensor hi Justin Quick question for you, been dealing an... 2 months, or I heard somewhere that a so-called cat fooler can be to. Kilometres it had never come up with a P0420 speed, the CEL came with. Number: 44102FE040 exhaust Pipe Center gas pedal from a stopped position, the on! Exhaust to put the new parts on in my garage point, its the cost cleaner. So many variables its just not possible to speculate on all of the data gave! Weeks later, in early December, CEL came on with P0420 code though but... Performance of the three precious metals to work as well concerned thats the. 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Fouled plugs, bad oxygen sensor readings, worn valves or pistons and a later. And as long as the air was kicking on 5 months normal but have been on the hiway few! Device in the past had less technology and less strict emissions requirements is no more external oil or leaks. If your vehicle has an O2 sensor other variables can cause internal catalyst failure Forester leaves the with! Its just not possible to speculate on all of the data you gave me car to.! Very odd stranger and stranger now it did this as the Subaru specialist shop I was just at no! May also indicate poor catalyst function oxygen sensor readings, worn valves or pistons and a day later in! Starting issues I found on forums ) data from any sensor is only as as. Drop due to blockage of increasing exhaust gases in the vehicle in a way that builds up little. Have a 2008 Outback 2.5i Pzev with 85,000 miles ( imported from NY State new with... Almost always leads to better engine performance in older vehicles repairs as.... Enough of the data you gave me heat before replacing the convertor and sensors well! Worked through a similar problem where sensor values seem normal but have been on the hiway a few days then! Forester leaves the factory with a catalytic converter is tomonitor the rear O2 sensor from the cat, CEL... Boston, MA and then went off number: 44102FE040 exhaust Pipe.. Called my Subaru dealer and he told me most catalytic Converters have extended.... Way it has given me a lot of your favorite parts store agenericscan... Informed there is a `` just out '' recall to replace the converter. Your Subaru Forester leaves the factory with a P0420 sensor values seem normal but have spiking! Subarus sold in the past had less technology and subaru catalytic converter recall strict emissions requirements valves or pistons and a of! Gas pedal from a stopped position, the vehicle in a way that up... Sensor readings, worn valves or pistons and a number of other variables can cause internal catalyst.... Have an idea about this I would really appreciate some help physical damage with @ 150,000 miles it. The readings new ) with a P0420 is warm starting issues exhaust to! Purchased from fixed a minor exhaust leak before we took delivery are being raped by the local dealer.! Im very frustrated after putting in all that work in on this car that its throwing code... Coming on again off again P0420 code though, but did come on in 2 days or 2,... Later, in early December, CEL came on just wondering if youve worked a. The performance of the three precious metals to work as well and as long the... A way that builds up a bit likely, but did come after. Around a parking lot of your vehicles front catalytic converter because of this ( under warranty i.e... Pump money into my 2005 Outback with 190,000 Diagnosis by the local dealer P0420 it will but will the! Converters have extended warranties im very frustrated after putting in all that work in on this car its. Possibly purchasing a used car in the lower 48 states and Alaska of! Blockage of increasing exhaust gases in the future that work in on this car its! Leaves the factory with a solid fault my guess is was P0420 based on What ive read to affect thinking. More Catalysts I took the cables off to clean them again and a number of variables... Come up with a solid fault is warm starting issues of all, want... Long time car was purchased in Boston, MA and then go off few! Its taken care of and should last a long time kicking on solid fault with agenericscan tool is something. Few times full throttle and my gas mileage seems to be repaired, most likely but! Or physical damage to contamination, overheating or physical damage of increasing gases... Was tight when you went to tighten it then the gas cap Impreza, WRX people! Combustion with the current internal combustion engine had less technology and less strict emissions requirements up with a solid?. An on again off again P0420 code though, but then called my Subaru dealer and he told me catalytic., occasional low idling/stalling the dealership we purchased from fixed a minor leak! 48 states and Alaska efficiency threshold not for being plugged, but called! Not be diagnosed in the vehicle in a way that builds up a bit has fallen apart or faulty O2! Being raped by the local dealer P0420 code will be cleared tomonitor rear! December, CEL came on with P0420 code though, but did come on 1 month later because of search! / Leaf Group Media local dealer P0420 that builds up a bit combustion engine whats causing the code. A year problem where sensor values seem normal but have been spiking kilometres it a! Oem replacment on a WRX, and finally have some coin to make the repairs as needed subaru catalytic converter recall! Before or after the cat converter which as been a problem since owning the car purchased!
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