SOURCE: I have a code P0420 on my 2005 Nissan Altima.Is. the code points a catalytic conveter failing. alot of times they are replaced when the reason for the code is something else so a complete diagnistic should be performed before replacing. code P0420 is set when the computer detects a fault in the three way catalytic converter circuit. there is a oxy sensor before and after that cat, and if the sensors do not read what they are supposed to be, it sets a code 420, which could be a failed sensor, or a failed catalytic converter, or a failure in wiring. P0420 NISSAN Notes 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.
This page is meant to help you troubleshoot the Nissan Cube P0420 trouble code. It covers Nissan Cube P0420 meaning, symptoms, causes, and possible solutions. WIth the Cube, OBDII P0420 is often caused by a bad oxygen sensor, but there can be other causes as well. Jumping straight to replacing the O2 sensor can cost you time and money. I have a 2000 Nissan Altima with aprox 136k miles. Friday I put gas in my car. 3 days later the check engine light came on. Checked fluids, gas cap seemed tight at the time, oil, etc.Took it to O'Rileys and had them scan - and came up with a P0420 code. 20/08/2018 · My 2010 Nissan Altima s 2.5 has 110k miles and recently my ses light came on 3 days ago. Today I went to run the code at pepboys at it came up as p0420 which I hear can be many things but usually the cat converter needs replaced? Is this true or is there a broad range of things it can be? The car seems to drive fine, gas mileage.
P0420 slow acceleration 7 Answers. Code p0420 came and cleared but problem remains that car will not accelerate when u floor it, engine will not increase rpms, will accelerate if u drive like grandma, was told could be clogged conv. 2010 Nissan Altima code P0420 2 Answers. Nissan P0420: Catalyst System Efficiency Below Threshold Bank 1. Possible causes – Three way catalyst converter Bank 1 – Exhaust tube. 2007 Nissan Altima 2006 Nissan Urge Concept 2006 Nissan Terranaut Concept 2006 Nissan Note 2006 Nissan 350Z 2005 Nissan Zaroot Concept 2005 Nissan. 25/02/2012 · Should the SES light stay on immediately after starting the engine if code P0420? So that I can understand the way the emissions system operates and indicates, I need to know that if the exhaust manifold/catalytic converter is fried and caused the code P0420; and remained fried, can I then expect the light to remain illuminated. Hola amigos, tengo el mismo problema con mi Nissan Altima 2011, lo q a diferencia d ustedes me pasa exactamente lo mismo pero cuando llevo aproximadamente hora y media d viaje, me lo hizo la primera vez en un viaje d 3 horas, luego por casualidad le tuve q cambiar el filtro d aire del motor e hice otro viaje pero este d 4 horas y no tuve.
29/08/2012 · Engine Code and Check Engine Light P0420 and P0507 for Nissan Altima Code P0420 for two sensor. Change thsi one or Try to clean it will. 2008 Nissan Altima Starting issues push. 2008 Nissan Altima starting issues push For Starting there can be. 21/06/2013 · I have an 06 altima s 4 cylinder with a re manufactured engine and got the P0420 code. I took it to the dealership and they came back about 20 minutes later saying the catalyst, rear 02 sensor and sparks plugs needed to be replaced all for about $2000.
Have you checked for exhaust leaks? Actually looked at the signals from the O2 sensors? Checked the wiring for the O2 sensors? The P0420 code, despite being labeled as an inefficient cat, really means a downstream O2 sensor that is too active relative to the upstream sensor. 23/10/2019 · Took my 2005 Altima to United Nissan to have the P0420 fixed which I read was because of the faulty ecm module and they said they'd reprogram it. But after arriving they quoted me almost $3000 to repair everything else. When I declined they refused to reprogram the ecm because the check engine light was on and didn't do a damn thing to the car. Nissan Code P0420: Catalyst system efficiency below threshold Bank 1. P0420 can be caused by bad O2 sensors, a failing catalytic converter, or a leak in the exhaust system. See here for a step-by-step guide on how to diagnose and fix Nissan code P0420. Q: Need to replace catalytic converter My car has 11800 miles. My car has an automatic transmission. Hi there. The code P0420 is coming up for the Downstream Oxygen sensor has picked up an abnormal reading and is saying that the. P0420 – Catalytic converter system, bank 1 -efficiency below threshold. By Reinier. However, note that code P0420 can appear even if the converted has never overheated,. 2005 Nissan Altima 2.5 All, MIL came on on my '05 Altima after 102K miles.
29/12/2008 · Automotive Forums.com Car Chat > Nissan > Altima > Service Engine Soon Code P0420. Service Engine Soon Code P0420. dphess. 09-11-2007, 06:33 AM. I had the code ran on my 2002 Altima 2.5s and the code was P0420, catalyst efficiency below threshold, the guy said it's either the lower oxygens sensor or the catalytic converter is starting to go. P0420, P0335 & P0725 codes on my 06 Altima. 2006 Nissan Altima The code read was P0420, catalyst system efficiency below threshold bank 1 which could be the cat converter or the o2 sensor not functioning properly. Where is the stater on a Hybrid 2007 Nissan Altima? How can I fix the rear door speakers in my 2018 nissan altima? 2007 nissan Altima hybrid ready green light Doesn't come on and car doesn't run. no spark from coils, changed both crank and cam sensors. air conditioner won't blow out of the main vents. P0420 2006 Nissan Altima - Hi, My check engine light never came on however my car was having issues accelerating when pressing the gas. It slowly pick.
09/02/2007 · thanks for the info, what kind of y-pipe do you have? I'll get my car back from the dealer on monday. they wanted to charge me about $1400 to replace the cat and o2 sensor, so i'm gonna just buy the y-pipe and sensor from somewhere else. what do you think about the ebay warspeed y-pipe, maxhopper said that he's heard about the flex pipe.
23/07/2010 · 2002 Nissan Altima, 2.5L OBDII code P0420 Very Important that you listen to the previous post. It happened to me and cost me over 2500 dollars for new cat and engine.
It is considered generic because it applies to all makes and models of vehicles 1996-newer, although specific repair steps may be slightly different depending on the model. So this engine code article applies to Nissan, Toyota, Chevrolet, Ford, Honda, GMC, Subaru, VW, etc. P0420 is one of the more common trouble codes that we see. 2006 Nissan Altima P0420 Catalytic Converter P0420 Nissan Description 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 sensor.
21/10/2019 · 2006 Nissan Altima P0420 Catalytic Converter2006 Nissan Altima P0420 Catalytic Converter P0420 Nissan Description 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 sensor. A three way catalyst converter Manifold with high oxygen.
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