P0420 nissan murano 2009

OBD Code P is an extremely common indicator of an issue with the operating efficiency of your Nissan Murano's catalytic converter, p0420 nissan murano 2009 it's letting you know by flipping on the check engine light hopefully before you fail an emissions test. This code basically means that the engine's O2 sensors associated with your Nissan Murano's Catalytic Converter have informed the electronic control unit ECU that the catalytic converter isn't doing its job well enough or perhaps at all.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. It has been running great otherwise, despite it has K miles on it The scan tool only detects that code. The code originally came up earlier this week and went away a day later.

P0420 nissan murano 2009

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I guess it's acting more as an octane booster to the car at the moment. Anyways, as I went to repark the car, I noticed that the light was not on any more.

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This page is meant to help you troubleshoot the Nissan Murano P trouble code. A failing oxygen sensor or bad catalytic converter are the most common causes of P Catalyst system efficiency is the percentage of these chemicals removed from the exhaust system. Oxygen sensors measure these pollutants. When the readings from the upstream and downstream oxygen sensors show similar readings not enough pollutants expelled from the exhaust , your vehicle will throw the service engine soon light P This can happen for three reasons:. You can ignore this section if your Murano has an inline engine or if the exhaust manifolds merge into one pipe before the catalytic converter. Typically, the first cylinder is closer to the front of the engine.

P0420 nissan murano 2009

Log in. Sign up. Home Forums General Problems. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. I am new to this forum so please forgive me if I don't do something right.

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Sign up. I decided to try the anti fouler trick. Please consider creating a new thread. As I was cleaning the area and getting ready to replace the boot, I saw the bank 1 O2 sensor. Not sure, you need to disconnect the bottom pipe to reach the O2 sensor. This is our favorite choice for a universal replacement cat. These should be easy to spot, especially when the engine is running. If they're around degrees apart Farenheit then your converter is probably fine and you're looking at a problem with your O2 sensor s. On dual-exhaust vehicles, you might see code PO instead, representing the second bank. You can test the sensor before doing that. At this point, the front sensor should be registering varying levels of O2 in the exhaust while the back sensor should be reading fairly stable levels, because the converter "normalizes" the exhaust as it flows through the catalyst. Carefully unscrew that making sure not to stress the wiring connection. Or access it from the wheel area.

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The code originally came up earlier this week and went away a day later. I need coffee 41 Replies. I don't have an equipped garage to do this is at the moment, so if possible, I'd rather replace the O2 and leave it at that I have done it. Sort by Oldest first Oldest first Newest first Most reactions. They tend to be affordable — just pick one up from Amazon or an auto parts store. The reason you can make this determination is that a functional catalytic converter will lower the temperature of the exhaust by a substantial degree in the course of normal operation. You can access it from the front without removing anything. Yeah i know unscrewing an O2 can be a BIG pain I'll try by adding some premium fuel into it first.. It appears to have turned off Jack up the front end and follow the bending flex pipe.