Trade up to a new subaru with more industryleading safety and technology features. Download your free pdf file of the 2004 subaru legacy on our comprehensive online database of automotive owners manuals. Live demonstration of subaru forester and outback s 4x4 symmetrical all wheel drive system. P0420 everything you need to know subaru or whatever you. I would very much value your input on what i should do with respect to the recommendations i am receiving. On some vehicles such as some subaru models an ecm reflash will fix the. I have a p0420 code on my 2004 legacy, 35th anniversary edition code reader says catalyst efficiency below threshold, answered by a verified subaru mechanic we use cookies to give you the best possible experience on our website. So it has a special catalytic convertor and heads on it. I keep getting the p0420 code for the emissions system below threshold. Fixing a subaru p0420 the cheap and nasty method youtube. There are many things that can cause the p0420 trouble code in your outback.
There are several reasons a p0420 will come up as an error and. P0420 catalytic converter efficiency below threshold merged thread. The front oxygen sensor before the catalytic converter is usually called. View and download subaru 2004 legacy owner s manual online. Repair topics computers and sensors how to fix code p0420. All years p0420 page 2 subaru forester owners forum. Find 2006 subaru outback recalls information, reported by the nhtsa, and we will help you find a nearby service center where you can get your car fixed. You simply cleared the contamination and helped your cars catalyst system perform to required specs again. Every manual available online found by our community and shared for free. Code p0420 catalyst system efficiency below threshold often means you.
The subaru outback is an automotive nameplate used by the japanese automobile manufacturer fuji heavy industries fhi since 1994. I would also suggest reading in your owners manual what subaru states about not just the check engine light, but. These cars can self check fault codes this is how to read them no odb scanner needed you. I have a p0420 code on my 2004 legacy, 35th anniversary edition code reader says catalyst efficiency below threshold, bank 1. How to check fault codes on subaru legacy forester. View online or download subaru 2004 outback owner s manual. This low kilometer subaru impreza flags a p0420 catalyst efficiency fault code very quickly. How to fix code p0420 ricks free auto repair advice ricks free. I put 2 spark plug antifoulers on the rear mounted o2 sensor. I really like your website and it has provided a lot of information to me on the p0420 code on my 2000 subaru outback. It comes on about 100150 miles after driving the car. Find out if you qualify for our free subaru roadside assistance. How can i fix my catalyst system in my subaru 2004. Trouble code p0420 catalyst system efficiency below threshold bank 1.
Please see the subaru navigation system owner s manual for more information on how to properly connect your smartphone devices bluetooth audio streaming capability. View online or download subaru 2004 outback owners manual. I have replaced all 3 cats2 were damaged from the exhaust being banged around and you could hear the catalyst rattling. Service engine light often, this is the only symptom of the subaru outback p0420 code.
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