Question about Nissan Pathfinder
Posted by Anonymous on
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Posted on Jan 02, 2017
according to the manual i have... it has three.... one in the exhaust manifold.... and two in the exhaust pipe..... slightly vauge on the exact location of the last two sensors... but looks like it is after the catylitic converter.
Posted on Apr 15, 2009
is this a 4 or 6 cylinder?
if a 4 cylinder it will only have 2 o2 sensors
V6 will have 4 o2 senors which the sensor will be the right side of the engine first sensor.
1st sensor on exhaust, I recommend if you change one change all, as this will make the computer when it rechecks the system you have all clean/fast responding sensors.
if you have a slow response it means the sensor is dirty and not reading well, which is usually caused by minor misfires that the engine computer dismisses, so a tune up would be recommended too.
Posted on May 06, 2009
It is probably the sensor before the cat. if it has a heater. The heater circuit going bad is a common problem, it does not affect the way the car runs after it warms up, it is an emission device to heat the O2 sensor up quicker than the hot exhaust gas would. It should be replaced because it will keep your check engine light on and you would not be able to pass an emission test.
Posted on Oct 12, 2009
A great tool to have that can save you some money to read computer error codes and clear them after work has been done can be had for under $100 from Actron. This is what I have been using and its a life saver but it's also good to have the vehicles repair manual as well.
The computer on this car is OBDII like many other vehicles out there these days so you'll need a tool that can plug in and read the outlet located above the shin of your right leg under the dashboard or steering wheel. Here is a link to a bunch of their products on amazon Actron and other OBDII Computer diagnostic code reader tools.
Posted on Jan 11, 2010
I had a similar problem with my car. It turned out the O2 sensors were fine and the issue was a leak in the throttle body causing the engine to run lean. If you have an ODB2 scanner you can look at fuel trims, etc and will be able to tell.
Posted on Mar 28, 2010
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