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He has many many used foresters for sale and probably has a rebuilt engine ready to go or he can do yours. He is comparably cheap. Ph-717-426-4142. Tell him Al Conrad sent you. The other guy is every bit as good but a bit more expensive and probably doesn't have a rebuilt. He is Subaguru 717-786-2304.I figure I'd give this thread a quick update. We did the catalytic converter stew with citric and oxalic acid in July of 2019, and our 2002 Forester, which previously had a nagging problem, has been P0420-free ever since. 18 months and counting... ~ Silke ~. '02 Forester S 5MT - "Cooper". '11 Honda CR-Z 6MT - "Kat".P0420 is a major money maker for Subaru mechanics... When the rear O2 sensor measurements are our of the very narrow acceptable values, it will throw the P0420 code. That could be because the engine is running too rich (which in turn could be caused by several factors, incl MAF sensor, throttle body issues, Front O2 sensor giving wrong …But it's declined, and runs really crappy and rough all the time now. So I took it to my mechanic buddy who replaced the trans (trustworthy guy), and his scanner pulled P0304, P0302, P0301, and P0420 codes... so all of the cylinders are misfiring except #3, and of course the catalytic code, which could be a result of the cylinders misfiring, or ...P0420 - Catalyst System Efficiency Below Threshold (Bank 1) P0031 - HO2S Heater Control Circuit Low (Bank 1 Sensor 1) P0134 - O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) The last 2 CEL codes are pointing to a defective front O2 sensor or the wiring to the front O2 sensor. The most recent was replacing the front O2 sensor on the cat.WAKE FOREST, N.C., Jan. 20, 2021 (GLOBE NEWSWIRE) -- Wake Forest Bancshares, Inc., (OTC BB: WAKE) parent company of Wake Forest Federal Savings ... WAKE FOREST, N.C., Jan. 20, 20...Надоела ошибка p0420… — subaru forester (sf), 2,5 л., 1999 годаExplained engine ('09-'13)Subaru p0420. Check Details D fit c c br po420 f ia l ok c $145.45 anais.tn. Subaru check engine light and code # p0420 explained('06-'08) Had a test done at auto zone engine light on results on computer testerSubaru p0420.1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX; All Activity; Home ; Newer Generations of Subaru discussion ; 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX ; Check engine light code P0420 Check engine light code P0420. ... The auto parts store read it as a P0420 code - catalyst, low ...Jun 6, 2013 · The P0420 CEL code + reduced gas mileage would point me upstream. The rear O2 sensor is good, as it's telling you there too much O2 in the exhaust... as in, you're running too rich. So rich that the CAT can't reduce the O2 levels. That would also explain the poor gas mileage.2.5x_sleeper. 45859 posts · Joined 2007. #2 · May 17, 2020. @Jaime ochoa welcome to the forum from Oregon! The P0420 CEL code is from the rear O2 sensor, but that doesn't mean the sensor is bad. The rear O2 sensor is monitoring for excess 02 in the exhaust flow, so the fault could be something upstream... even a pinhole leak in the exhaust ...Jul 16, 2007 · Forester 2001 L - Stock 101k Miles P0420 - Catalytic Converter Efficiency Below Threshold The forester has been throwing this code for a few months now, typically shows up on long highway runs (but to be fair, that is the vast majority of my driving). I bought a scanner from scantool.net, which I am quite impressed with for $60 new.NO, P0420 code started BEFORE the exhaust work, has been CEL since I got the car. The P2096 code started some time after the $5 fix AND the exhaust work. I think it is pretty clear that the P2096 is related to the fix, as it would make sense if the O2 sensor is backed out of the exhaust stream that it would "think" it is running lean.Conclusion. The P0420 code is an indicator of a problem with the catalytic converter in your Subaru. Common causes can include failed or malfunctioning components, such as the oxygen sensor, fuel system, EGR system, and exhaust system. It's best to take your vehicle to a professional mechanic for diagnosis and repairs.DieKeis. 205 posts · Joined 2009. #17 · Jun 28, 2010. I get the P0420 code at irregular intervals. Sometimes on a 6-8 hour road trip I'll get it 2 or 3 times (I reset it with my Scangauge II), other roadtrips I get nothing. And then occasionally it'll pop up on my 7 mile commute - again I reset it.P0420 Subaru: Code Meaning, Causes, Symptoms, & Tech Notes. The Engine Control Module (ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 …=====Claim your FREE engine code eraser 👉 https://free.nonda.co 👈=====Engine Code SUBARU P0457 Saving Repa...There's some good information from that post onward. The gist of these messages and threads is this: to deal with a P0420 code on 2005+ vehicles, the ECU should be remapped to exclude this code, rather then using the $5 fix. The reasoning is that the rear O2 sensor is actually used to manage the engine, at least a little bit, rather than just ...Two weeks ago I had to have the front O2 sensor replaced on my 2000 Forester. Just last night I got a CEL and went to Auto Zone to check the code. It was …Went to the dealer and said I got a P0455 code. They Cleared the codes and told me it was just a loose gas cap. Again after only 30 days from the last time. Got another P0455 "Evaporative Emission Control system leak detected (large leak)" or "loose gas cap". :shrug: The manual says "turn the engine off and take the gas cap off and back on, and ...Forester 2001 L - Stock 101k Miles P0420 - Catalytic Converter Efficiency Below Threshold The forester has been throwing this code for a few months now, typically shows up on long highway runs (but to be fair, that is the vast majority of my driving). I bought a scanner from scantool.net...I have been trying this on quite a few subes with the P0420 catalyst insuffiniency code and it has worked great. It is a simple fix that can be done in minutes. ... 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX ... Newer Generations of Subaru discussion ; 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX ...P0325, P0420, and passing California smog test. For some months now my '02 Forester L has been giving me the P0420 code (and just today it also gave me the P0325). I haven't done anything to address the issue other than to turn off the CEL using my Actron scanner, but now it's time to register my car in California for the first time and so I ...

Ran the code and got " P0420 - Catalyst System Efficiency Below Threshold Bank 1". ... We’re the best Subaru Forester Owners Forum to talk about the best years of the Subaru Forester, modifications and reliability history of …Finally around 300 miles into the trip it lit up, codes p0103 and p0420 showed up and it starting running really rough, lots of hesitation and then would surge like crazy. ... We’re the best Subaru Forester Owners Forum to talk about the best years of the Subaru Forester, modifications and reliability history of the Subaru Forester.In-dash shows P0700, P1710 and C0140. I used the Bafx and torque pro to clear the codes, it didnt clear the P0700 nor the P1710. This is a first for these codes after the new ECM. Prior to the new ECM codes were P0420 (Cat system efficiency below threshold) P0306 (Misfire cyl 6) and P2503 (Alt Circuit Low).Burning oil in combustion coats the CC surfaces, which reduces the effectiveness of the catalyst, and throws the P0420 code ... We’re the best Subaru Forester Owners Forum to talk about the best years of the Subaru Forester, modifications and reliability history of the Subaru Forester. Show Less . Full Forum Listing.P0420 Subaru: Code Meaning, Causes, Symptoms, & Tech Notes. The Engine Control Module (ECM) monitors the switching frequency ratio of heated oxygen sensors 1 (front O2 sensor) and heated oxygen sensors 2 (rear O2. www.engine-codes.com.

2002 subaru forester with a p0420 code. bank 1. what needs to be done? Unfortunately, the P0420 is a fairly straight forward code, and a fairly common problem. This code points to a failing Catalytic Converter. The Oxygen Sensors measure the amount of emissions in the exhaust going into, and then out of the converter.As long as I drive my '09 forester X limited at this altitude all is well, car runs fine, plenty of power, good mileage, etc. If I drive the car to Colorado Springs at about 6,500 ft., It almost always sets the P 0420 Catalytic insufficiency code.For the last 3 years, several times during the summer, the check engine light comes on for a few hours to a couple of days then goes out, when the weather warms up, never in cold weather. Usually this code or an O2 sensor or both. Usually the light is out when the car sits overnight. For the...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Apr 1, 2022 · The CEL went out and all seemed good. Now 300 . Possible cause: I figure I'd give this thread a quick update. We did the catalytic converter st.