There is a special socket that you can get at most auto parts stores with an open side to get around the wiring. There is one sensor in the tailpipe before the catalytic coverter and one after. Use the socket to unscrew the sensors, and unplug the wires at the connector.
one
And they are expensive to replace... (i replaced one @ $400)
The 2002 Pathfinder oxygen sensors are critical part of the engine management system. You can find the oxygen sensors in the exhaust system.
oxygen sensors are part of the exhaust system
The 5.2L has two oxygen sensors.
The oxygen sensors are screwed into the exhaust system behind the engine on a 2002 Chrysler Town and Country.
The 2002 Toyota Camry XLE has four oxygen sensors. There are two sensors on the exhaust manifold ,and one before and one after the catalytic converter.
There is 2 oxygen sensors on the 2002 Nissen altima
There are many sensors on that vehicle. Need to know which ones you are looking for.
cut the wires off the old one and use a six point socket to remove and replace with an open end wrench
there are 4 o2 sensors
2