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There's no code for CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD for Bank 2, even though this is a possibility P0420 is VERY RARELY a failing cat. Then the P0420 came back again. There's no other problems: the engine doesn't run rough or feel choked off, the fluids are consistently good, fuel efficiency hasn't been impacted. P0420 - Catalyst System Efficiency Below Threshold (Bank 1) P0031 - HO2S Heater Control Circuit Low (Bank 1 Sensor 1).

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 Full Forum Listing. Typically, you'll find out about P0420 because your malfunction indicator lamp or "check engine light" turned on & you or a mechanic diagnosed the problem with an OBD II code scanner like this one from Bluedriver. If DTC P0420 is found to be stored in the ECM, follow the diagnostic procedures outlined below. Mar 21, 2024 · If you find a P0420 code in your Subaru or Honda, it’s most likely the catalytic converter to blame.

Come join the discussion about performance, engine builds, exhaust, modifications, troubleshooting, maintenance, and more!. The live data should indicate the appropriate pressure for you altitude. On our 2003 Forester we bought a year ago at 223k miles, it threw a P0420 earlier this year, then again about two weeks ago I'm getting the P0420 code, do I need a new cat? see picture of inside the cat, I can't upload the video Thanks 675D18DB-17D2-42CC-A66C-0FAD3EBDA0D9. ….

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. P0420 subaru. Possible cause: Not clear p0420 subaru.

that makes no sense about after market not working if the computer is that senceitive then one little hicup wil turn the light on. It does this by comparing the readings from the two sensors.

There are rarely drivability issues associated with P0420. Nov 30, 2018 · The P0420 code in a Subaru Impreza will often be thrown if one of your car’s oxygen sensors is not functioning correctly. There are rarely drivability issues associated with P0420.

737 800 seat layout Aug 20, 2020 · As the code description implies the P0420 code means that the vehicle's control module has detected that the three-way catalytic converter is not working properly (is not as efficient as the factory is expecting). ramunto's bennington vermontbear lake snotel 2009 Subaru Outback P0420 Jump to Latest 774 views 3 replies 3 participants last post by bryancraftyhands Mar 20, 2024. temeku temecula showtimes Generally the P0420 has to do with the rear O2 sensor. The P0420 code in a Subaru Tribeca will often be thrown if one of your car's oxygen sensors is not functioning correctly. lil vision jayda cheaveshannamchainjcp salon near me See less See more Save Share Sort by Oldest first Oldest first Newest first Most reactions valvestem p0420 maybe a rear o2 sensor at this stage,. P0420 - need some specific help From what I understand, that rear o2 sensor waveform in the third picture is classic sign of a bad cat. ubs concerts 2023 Nov 30, 2018 · The P0420 code in a Subaru Forester will often be thrown if one of your car’s oxygen sensors is not functioning correctly. is borkholder furniture still in businessop 80 pillihss wages Learn the common signs to look out for and avoid disappointment. Nov 30, 2018 · The P0420 code in a Subaru WRX will often be thrown if one of your car’s oxygen sensors is not functioning correctly.