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. What to do from here? Your article says a possible cause is sometimes its just a small exhaust leak. He says it will run about $1200 and its best to do all three at the same time. 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. Someone else suggested it could just be the oxygen sensors and not both catalytic converters, as the dealer suggested. I drove the car in second/third gear on a local 14 mile roundtrip Monday night. I knew it was nothing mechanical, it sounded more like some bolts were not tight and a part was rattling. Converter Configuration: Direct Fit. The converter would not light off if it was toocold or if the air fuel mixture was too rich or ifit is defective. The P0172 needs to be diagnosed and addressed and it just should not be driven until it has been I am afraid. I also noticed that my Coolant Reservoir was empty. Thanks so much! Converter etc. My Mechanic wants to change out the whole thing. WebVehicle Recalls. Model Year Carline Affected Production Dates 2015-2016 Legacy 12/16/2013 9/30/2015 2016-2016 Outback 12/9/2013 9/30/2015 I would very much value your input on what I should do with respect to the recommendations I am receiving. Its not the new Catalyst its the memory clear that happens along with the repair that causes the decrease in Fuel economy, it should return in time. 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. She was perfect. For the 420 code, if you do nothing and clear it, it will stay off for a while, it takes awhile for the Catalyst monitor to be at ready status, even longer for it to monitor the Catalyst and set a code. It does not seem to be running any different. If you have a Cal emissions car then yes it needs the Cal convertor. On to the good news. Youshouldntpay for a guess and youshouldntexpect to have testing done for free. Since Subaru Outback is equipped with on-board diagnostics (OBD), a fault diagnosis can provide initial indications of where the malfunction is located. 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. 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). Are there some other signs that the CAT has failed? nitrogen. (Those are the O2 sensors, right?) Full And ever since that repair, from time to time the CEL comes on and the cruise light blinks. Justin: I have a P0429 code on my 2005 Subaru Legacy with 113 K miles. Buying and replacing the converters will be expensive enough. If you ever get around to that another article about PO420 coming on after an ECU reset, Id be delighted. In other words my engine was running hot for the first 20,000 miles or so. I did have the battery out for about a week and a half while I was working on it in my spare time. 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. Thanks for your very informative article. Any advice as I go chat with them and likely reach for my wallet? What, if any, additional trouble shooting should I request on the fuel pressure regulator? This is to get your attention as the public tends to ignore the check engine light or think they just have a loose gas cap, then the next day they are stranded. 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. id really like to stay away from the OEM $400+ part if i could do it for less by just replacing with aftermarket. 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. My 05 Impreza with less than 70k km on it threw the code a few months back without any other error codes. -Does cat affect fuel efficiency? Someone really needs to look at the Data and figure it out, is really what needs to happen. vapor, nitrogen, and oxygen before the exhaust is expelled into the. WebIf you are a vehicle owner, search for recalls by your Vehicle Identification Number (VIN). document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); 2023 All Wheel Drive Auto LLC. Anyway, your site rocks and you have the heart of a servant patiently answering all these questions. Any thoughts you have would be a huge help. Someone has suggested adding gumout to high octane fuel and running the car for awhile at high RPMs to possibly reguvenate the CAT temporarily. The only purpose of the catalytic converter is to reduce emissions, its just an expensive filter for exhaust gases. and suspected a one time voltage surge. Thanks. Most times if we make the repairs the same visit we will discount or waive the diagnostic fee. What fuel additive would you suggest, if any? Of all the vehicle Ive had over the years with much higher mileage, Ive never had to replace a converter. Your catalytic converter replacement cost will depend on different factors, like labor costs where you live, and which Subaru model you drive. did some reaserch and fell lost for ideas. The thermostat being stuck open could affect the catalyst function but not the temperature gauge function, it could cause the gauge to read a lower temperature than normal but not cease to function. I understand trying to save money, but there is no solution other than back to factory parts. Justin. After this switch the check engine light disappeared. 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? 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. 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. I reset the code and let the wife drive the car (normal driving) for a week and it will not throw the code. Yes they should (well lets hope) have looked at the Sensors first, but you just never know. There is a more accurate way to check if the catalytic converter is clogged in your Subaru Outback. Ammonia (NH 3) odor may also indicate poor catalyst function. P0420 returned, and I tried CatClean in the gas tank Your Subaru Forester leaves the factory with a catalytic converter. If you have an idea about this I would really appreciate some help. Air bags. My independent Subie guy has access to some used Cats for about $500 installed, but Im concerned thats not the only issue. Any unburnt fuel in the engine that goes into the exhaust system will ignite in the catalytic converter. FCFE2. Buy an O.E. russellpat Registered 2022 Outback Touring XT. Model Year Carline Affected Production Dates 2015-2016 Legacy 12/16/2013 9/30/2015 2016-2016 Outback 12/9/2013 9/30/2015 It is not complete list and many of the items listed are voluntary fixes, not official recalls. Had it replaced, and light is out. Toggle navigation. And yet the first couple times I checked it when all this started happening, it DID seem loose! 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. All catalytic converters fail eventually since its a wearing part. Also, Im looking at replacement cats online and I see on some places that theres a rear cat, other places it just shows a front cat that connects with the exhause manifold, and in other places theres what they call direct fit replacements where it looks like a rear and front cat but only the midsection (not up to manifold). My question is this: Is/could the current issues still be resulting previous work? Cannot find any reference. He wasnt sure why the check engine light was coming on and suggested I contact subaru. If ceriumis contaminated or the converter overheats,the converter is damaged. That should be a P0420 code: cat inefficiency bank one. I managed to start it again and noticed it was surging while idling. How did you get on with your problem? The P0420 may be related to what ever is causing the P0172, but I cant know that until I diagnosed. This should work: We had the headgasket done a month before the code appeared. 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. Thats apparently what Subaru owners say? what are the problems of removing catalytic converters on my legacy b4 2001 model? The front Y-pipe assemblies can cost twice as much money to replace as the rear converter assembly. Full I thought I was being proactive in changing the oil frequently. Unfortunately this did not work either. Ambient temp vs ECT temp at start up combined with drive time at certain speeds are what ultimately trigger the monitor, when we perform a drive cycle post code clear the catalyst and Evap monitors are the last two to come back online, and sometimes can take days or weeks. Kind regards, Its been happening for about 3 years. Closed Public Holidays) or email at feedback@subaru.com.au. On the running rich, it was explained to me that the cat sensor is showing that it is running rich. I appears that it is a clogged cat converter. -Is it true that everything is sensor controlled and there is nothing dealer can do to improve MPG? Hi. When I drive the car for a week it will throw the code (spirited driving). Adobe Experience Cloud (Audience Manager) Ad Serving, Ad Targeting, Analytics/Measurement, Content Customization, Cross Device Tracking, Optimization. Without data you dont know if the Catalyst function is improved or not. Is that normal with the new Cat? Thanks, I am not knowledgeable about cars so any help that you can give me would be greatly appreciated. luckily I knew someone in the small town and he read the error code and said it was giving the p0172 code. Justin, thanks for sharing your expertise on this site. 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. Any thoughts you have would be most appreciated. I need to know what I should do first. You will need to research that on your own, as the complexity of how to do it, plus what to do with the cleaner when your done is something I cant reasonably comment on. There is no more external oil or coolant leaks at the head anymore. 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. If just the boots are bad at least that I can see, is there any harm in changing just these and leaving the axles as is? These are obviously aftermarket and he only charged her for the 1st one, about $600. I have not used the Torque app as I have the factory Scan tool but the pictures in the article do show what you need to be looking for when graphing data from the rear 02 sensor when trying to determine if the converter is reaching light off. They also tried to source ECU remap codes that would just ignore the reading from the O2 sensors which is how they have solved issues with other models (our emissions laws are not quite as strict as USA or Europe) but because the Tribeca is built in the USA not Japan there is nothing available. In any case, it is advisable for laypersons to visit a workshop. Any ideas? russellpat Registered 2022 Outback Touring XT. I like to know before I decide whether My 2004 Legacy keeps showing a P0420 code. Thats the place to start. Learn More. The muffler shop says there are 4 cat conv (2 at engine, two inline mid exhaust). Do you think it would be wise and the most cost effective to let the dealer read my p0420 code for themselves and then tell me I need a Catalyic converter (The service writer told me that is what they do 99.9% of the time with the p0420 code). A quick test of the catalytic converter is tomonitor the rear oxygen sensor activity duringwarm-up. My confidence in them is shaky. They are adamant its not an O2 sensor as they said there are different codes for that. Exhaust. If your car complies, Subaru will pay part or all of the cost of a head gasket repair. The catalytic converter was allegedly replaced at a Subaru dealership under recall. But after reaching a certain speed, the performance of the engine will drop due to blockage of increasing exhaust gases in the system. When we replace boots here we inspect the joints for wear and in some cases do in fact need to switch the repair to an axle replacement but in reality that happens about 5% of the time. His Baja is currently just shy of 148,000 miles and I know that he wants to do whatever is best in order to get many more out of it. It really helps to have a knowledgable Subaru mechanic give advice like your do. Had the code cleared and now 2 days later the light came back on. It can run into problems over the normal life of the vehicle, and is often accompanied by OBDII code P0420. Like I keep stating, if instead of the price on the sticker when you buy the car instead stated how much to own over 10 years no one would buy it, this goes double for German cars. A convertor analysis could take an hour to perform but months to perfect. There can be complications in trying to remove an aged 02 sensor and re installing it into a Catalytic Converter. 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We will discount or waive the diagnostic fee inline mid exhaust ) on after an ECU reset, Id delighted!
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