Question about 2003 Nissan Murano
What is the most likely problem with this code?
Do you mean P0420?? If its a P0420 you need a catalytic convertor.
Posted on Jul 20, 2008
Not necessarily a catalytic issue. I have a 2000 Sentra that set off the same code. I replaced the catalytic, which set me back a ways (California emissions added to the cost!), and within a week, the same code went off. After doing some research, Im going to check into the secondary O2 sensors on the up and downstream of the catalytic (both O2 sensors found in my engine bay have already been replaced so I kind of narrowed it down to the remaining 2). As the catalytic is brand new and there are no exhaust leaks, I am forced to conclude that this is my problem. My suggestion is to have your sensors checked before dropping $600 like I did. If they have the tools, they can test individual sensors without replacing them which could save you $120-$165 per sensor by just guessing. Good luck!
Posted on Nov 12, 2008
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Posted on Jan 02, 2017
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