around $1000 us
four
you take it to the people to fix it.
And they are expensive to replace... (i replaced one @ $400)
its screwed into the exhaust manifold,undo wire and unscrew at manifold.
You need to take a wrench to loosen the oxygen sensor, then you will need to disconnect the cord. Once you have done that you will then pull out the old oxygen sensor.
wich one it has two one on the manifold and the other one on the exhaust pipe
It is very easy to find. It is at cat. inlet. you can see it from the top when you open the hood.
wich one it has two one on the manifold and the other one on the exhaust pipe
One can replace the oxygen sensors in a Volvo S80 by them selves by utilizing the help of a Chiltons manual on Volvo S80s. The faster route though more expensive, would be to enlist the help of a certified Volvo mechanic.
The P0420 code on a 2005 Nissan Xterra indicates a problem with the catalytic converter's efficiency. To fix it, first, inspect the exhaust system for any leaks and check the oxygen sensors for proper operation. If the sensors are functioning but the code persists, the catalytic converter may need to be replaced, as it could be clogged or damaged. Additionally, ensure that the engine is running optimally with no other issues that could affect emissions.
To replace the oxygen sensor in a 2000 Nissan Altima, first locate the sensor, which is typically found on the exhaust pipe or manifold. Disconnect the negative battery terminal, then unplug the old oxygen sensor's electrical connector. Use a wrench or oxygen sensor socket to unscrew the old sensor, then screw in the new sensor and reconnect the electrical plug. Finally, reconnect the battery terminal and start the engine to ensure proper operation.
Assuming you have the V-6 engine, it has two downstream (after the cats) O2 sensors and two upstream (before the cats) Air/Fuel Ratio Sensors. So the answer to your question is two O2 sensors.