If its not affecting the performance, you can put it off until you need to test for emissions if you live in an area that tests. Most likely the rear 02 was set for a rear 02 sensor code on the 2007 as its fairly common. 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. At about 157K, I remember hearing a rattle from the bottom of the motor. Another more slightly annoying feature Subaru owners discover about the exhaust system on their vehicles are heat shield rattles. 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. I now am on my fourth Subaru Outback/Legacy in a row. Your article is the most helpful that I have found thus far. hey justi, we have a 2007 legacy with 180000, we were driving home and the car felt like it was holding back and wouldnt get up past 40mph and made growl type noise at passenger side airbox, the engine sounds perfect just no power dealership replace mas sensor and tol me it was fixed went to drive home didnt make it out of lot, whats your opinion? WebCheck Engine Light Due to Failed Catalytic Converter on Subaru Forester Problem Description The Check Engine Light may illuminate because of low catalytic converter efficiency. WebShop 2022 Subaru Outback Base Catalytic Converter (Front). Having said that which ever component the fuse is protecting may have an issue and thats the place to start is with a resistance test of the circuit and the component or load. All Wheel Drive Auto, LLC and its staff are not affiliated with Subaru of America. 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. Any advice is appreciated. 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) . The car continues to run great. 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. FCA03. Should I have the cat replaced since its still in warranty? Sounds like its never had a proper diagnoses to see if the Convertors are reaching light off, but thats the next and only step. 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. Typically the Catalyst and 02 sensors should be done a the same time. When I drive like my wife drives it will not throw the code. Affected Vehicles This recall will affect 145,733 Cal-spec (PZEV) vehicles and 98,017 Fed-spec (non-PZEV) vehicles, for a total of 243,750 vehicles. But the code has me puzzled. Hi Justin, I would appeciate your comment on my 2010 Outback. It can run into problems over the normal life of the vehicle, and is often accompanied by OBDII code P0420. Also, using the Torque smartphone app (I hope youre familiar with this), what display should I be looking at to check the rear o2 sensor waveform? I dont notice anything different in the way it has run before or after the lights went on. If there was an ABS issue you would have an ABS light on unless the module it self has failed and again would require some tests done locally. (Suggestions I found on forums) All Wheel Drive Auto:Independent Seattle Subaru Service, Drive Auto Sports: Dyno Tuning & Performance. Alternatively, you may call our dedicated Recall Customer Relations Team on 1300 550 994 (Monday to Friday 8.30am 5.00pm AEST. Should I have asked for a Prenup.? russellpat Registered 2022 Outback Touring XT. I would make the head gasket repairs, then budget for the Subaru convertor when you can and maybe replace the front air fuel sensor and rear oxygen sensor at that time as well. Adobe Digital Marketing. This same issue may cause the car to fail the State Smog Test if one is required. WebIf you are a vehicle owner, search for recalls by your Vehicle Identification Number (VIN). Other makes are experiencing the exact same issue Subaru Is not alone in this and its he price of clean air. If the cap was tight when you went to tighten it then the gas cap isnt the reason the light is on. Tim. 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. I had the c converter replaced about 2 years ago. Really cant speculate on whats the matter, its possible the booster is failing but that would be very uncommon. 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? You wont find any answers until the code is read and a plan made form there. Learn More. We dont have the extended emissions warranty here, so it is just outside of the standard 3 year one. How is this test performedwhile driving or during idle? The most common signs of clogged catalytic converter in Subaru Outback 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. Even with the check engine it was running perfect until it didnt. $6100 is way to much $. If you have a Cal emissions car then yes it needs the Cal convertor. I was able to graph the 2d O2 sensor. WebCatalytic Converter Part Number: 44102FE040 Exhaust Pipe Center. ), 2. 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. Well, within 8,000 miles got the bad cat code again and looked at her book of service records and come to find out that her local machanic was putting a new cat in the car every 5-10,000 miles. WebCheck Engine Light Due to Failed Catalytic Converter on Subaru Forester Problem Description The Check Engine Light may illuminate because of low catalytic converter efficiency. I think I observed a good lights out condition (flat line) but with periodic rapid drop offs down to zero and then steep return to lights out. From there use the graph as a example of what to look for. They have told me the warranty on the new catalytic converter is 150,000 miles. 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). 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. 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. Full Analytics/Measurement. Should I take it out for a long drive? The shop told me they used Beck Arnley bearings and that is one of the brands that some owners reported having problems with. And ever since that repair, from time to time the CEL comes on and the cruise light blinks. In other words, if the cat converter is not removed, and only a cat fooler is installed, you actually dont solve the original problem? 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. Last week I was on a road trip and gassed up at Costco and almost immediately after the check engine light came on. Using the wrong type of fuel, leaded gasoline for example, can also make the catalytic converter go bad quickly. An infrared thermometer can be used for this test. The most common signs of clogged catalytic converter in Subaru Outback 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. How did you get on with your problem? So at this point all that has been learned is that the ECM is correct and there is a function issue, but until more testing is done we dont know the why. Unless the Catalyst is getting no where near the light off point? After reconnection, the CEL came on with P0420 code. 400kms of mainly open road driving and the CEL light is back on again. You are still replying to people and seem like a genuine person. Should I make sure they checked the O2 sensors, A/F fuel ratio, ECT, MAP before I allow them to replace it? EXHAUST, Engine, CP - OEM Subaru Part # 44620AA750. 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. Full Diagram #44102B EXHAUST. Any chance you have that other article around? After reading your explanations I end up with more questions than I started with. Second, we also have a 2007 Outback wagon, and earlier this year, had the head gaskets replaced (under drive train warranty, yay!). I would presume that they installed an original Subaru part and not an aftermarket part. 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. That really does help. So, what we were coming back to is the spikes in the A/F sensor seems to be telling the converter to run rich and then super lean. The vehicle identification number tells you if your car is affected. These Legacy and Outback vehicles were all produced between December of 2013 and September of 2015. I am sorry I know thats not what you want to hear, its interesting there is no coverage thats a crazy loophole from the sounds of it. These are obviously aftermarket and he only charged her for the 1st one, about $600. Catalytic If the LM2 will help to diagnose the problem, what is the correct testing procedure? Thats the only next step. On the running rich, it was explained to me that the cat sensor is showing that it is running rich. Opps, I forgot my third question. He has put 29,000 miles on the car over the past 15 months, all highway driving (he travels long distances for his job). Larry. Thank you. We review every problem as we work to keep our roads safe. All catalytic converters fail eventually since its a wearing part. typically be part of a 100,000 mile check up? It has a HG leak, I lose coolant, not at a very high rate though. I suspect they did not do much more than that.. Poor acceleration Hello, Justin, thank you for some terrific info you have provided on this site. If replacement is $200-$300, probably not a high target. Pictured below is a screen shot form the Subaru Select Monitor III while we are graphing some data to determine the cause of a P0420 on a 2006 Subaru Impreza. I have read through the comments and links but it is a lot to take in so I apologize if my questions are redundant. Hi Justin WebTo discover whether your vehicle is affected by the Takata airbag inflator recall, please click here to visit our dedicated Takata Airbag Recall website. If the catalytic converter efficiency degrades beyond an acceptable level, your vehicle may be releasing air pollutants that My 2004 Legacy keeps showing a P0420 code. Im running 02 Impreza 2.5TS, with EJ251 for about 6 months now. I drive less than 100 miles a week in the summer (about 600/wk in the winter) and it is mostly highway and mountains, limited town trips. My 08 Outback has 90,000 miles, so conveniently out of warranty. Do you think it is possible that in replacing the front sensor I managed to contaminate the cat somehow? I have I would venture to guess that 1 out every 5,000 auto technicians may have actually ever heard of this test. Hi Tim, Was initially upset, but then called my Subaru dealer and he told me most Catalytic Converters have extended warranties. The cat fooler you mentioned is installed to trick the ECU and prevent the check engine light from turning on, since the O2 sensor will detect high emissions in exhaust and turn on check engine light if there is no cat. I am in WY where it gets cold. I do not know if that has anything to do with it but, I did add some 50/50 coolant. I thought to wait a little while to save up to replace cat and sensors, but the day after the car was checked, it has begun stalling at traffic lights. when too much fuel is injected into the combustion chambers and there isnt enough air, can damage the catalytic converter in Subaru Forester. I pretty much went through the whole engine timing belt, water pump, cluth, ect. Given the rattling, gas odor, CC inoperable, and the PO420, is it reasonable to assume the CAT needs replacing? Justin. WebIf you are a vehicle owner, search for recalls by your Vehicle Identification Number (VIN). The light off will be shown by data from the rear o2 sensor. While there are many quality aftermarket catalytic converter manufacturers these days, you can price the converters and pay less than half what the Subaru dealer will be asking. But its not so good for the environment. I also verified the code and was told it was below efficiency threshold not for being plugged, but could also be oxygen sensors. My thinking is that either the cat has fallen apart or faulty rear O2 sensor. One month later the Check Engine light comes onthats never happened before. All Wheel Drive Auto, LLC is an Independent Subaru Service and Repair Facility. If the cat is tested and fails the test than it needs to be replaced, if how ever it reaches light off and still sets the code maybe its a candidate for the re programming as a first step. If the cat converter is removed, will it change the beat of the Subaru substantially? I went to part source and had it scanned and a code came back as PO420.. Should I replace the aftermarket front bearings with OEM bearings? Catalytic Converter. It is important to verify catalytic converter lightoff prior to determining if a catalytic converter has failed. 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. what does one do i am going to buy a digital full read out obd2 connector for my phone i can leave attached to get some live data recorded but im currently left scratching my head as to what to do now Other than start collecting live data snapshots of the moment it shows up. My dad recommends that I just sell the car, in fear that it may cost us much more than we bargained for. What, if any, additional trouble shooting should I request on the fuel pressure regulator? Like yourself I decided to live with it since it wasnt imparing my driving. hi there i have a subaro wrx 1998 and the check engine starts to come on and after a while it goes and after a while it starts to to come on and when it does tat the RPM goes lower than 0.8 and it turns the car off and if i was driving and the chek engin turned on when i am pressing on gas it feel like iam releasing my leg on gas but i am not releasing my leg on it and it comes back again but with defrent performance and after a while it starts to bring out a white smoke from rear (not so white) and with a bad smile, but if i turend the car off and starts again after like 1 or 2 hours nothing is hapening unless i drive like 6 miles its comes again, but now the chek engine is on when i start the car and the RPM is below the 0.7 and i cant drive it because the whole thing i told u about is happening when i does, plz help me knowing whats the problem and i will be greatfull. checked the injectors and fuel presure they are fine. Not psyched to pay 950 to replace the convertor. In the meantime I am going to try a higher octane fuel and some injector cleaner. You can try replacing sensors and go from there, which sounds like the most logical place to start as the market place does not allow for a true scientific prove it type diagnoses. Any suggestions would be greatly appreciated. Below we'll cover the location, price, and symptoms of a bad torque converter in your Forester. There is 7166 miles on this allegedly new catalytic converter. With the tool connected, turn on the ignition. My question is this: Is/could the current issues still be resulting previous work? This causes the vehicle to fail an emissions test. One year life span for the aftermarket convertors is very typical and very unfortunate which is why we wont use them. And yet the first couple times I checked it when all this started happening, it DID seem loose! That the Dealer should have another look. the lights came on again and I went ahead and had the new Cat installed.Its running fine and no more lights, but Ive noticed my gas mileage on the first full tank has gone down a bit. Good info, it helps a lot, thanks Justin. But after reaching a certain speed, the performance of the engine will drop due to blockage of increasing exhaust gases in the system. I read somebody else had the same issue. The warranty complicates things and can create a situation where the Dealer will want to try the 02 sensors and it may temporarily resolve the issue and get the vehicle out of the warranty period. The P0172 needs to be diagnosed and addressed and it just should not be driven until it has been I am afraid. He looked at the sensors and thought the crank shaft sensor was loose but the code came back. Or do you not have info info to make an educated guess (I wont hold you to any answer you give me as I understand there are a ton of variables)? Ammonia (NH 3) odor may also indicate poor catalyst function. So I think these lights are coming on because of something wrong the speed sensing controls rather than something wrong with the engine or emissions systems. 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. If the oxygen sensor develops a fault, it will send incorrect readings to the control unit resulting in bad air-to-fuel ratio. 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. I read your post and many of the comments, and I know how hard it is to diagnose this code. A sulfur or "rotten egg" smell indicates the formation of hydrogen sulfide (H 2 S), a likely sign of catalytic converter contamination. If you have read this article or any of the other ones I have written about the check engine light you will see that I suggest a code scan in correlation of the light coming on. Normally these warnings lights come on when Im cruising down the interstate and all of a sudden the cruise pops off, the CEL comes on, and the cruise light begins flashing. Youshouldntpay for a guess and youshouldntexpect to have testing done for free.
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