There is nothing to recalibrate. The ECU will take care of this for you.
No.
Not normally.
it has 2 sensors, 1 before converter another after converter in exhaust pipe.
The engine will not run properly with out a functioning catalytic converter and working O2 sensors.
All O2 sensors are threaded into the exhaust system at various points. Upstream O2 sensors are located before the catalytic converter(s) and downstream O2 sensors are located after the catalytic converter(s).
There are 2 oxygen sensors. One before the catalyltic converter and one after the catalyltic converter.
The oxygen sensors control the amount fuel in the engine and if it is making too many emissions the oxygen sensors will cut back on the fuel or if they are worn out they will increase the amount of fuel. The catalytic converter will eventually get plugged up if the Oxygen sensors are bad. The oxygen sensors control the converter.
There are two O2 sensors for the 01 QX4. One in front of the catalytic converter and other is behind the converter.
There are two oxygen sensors. One at the inlet and one at the outlet of the catalytic converter. The catalytic converter is behind the engine.
Yes, it can affect the oxygen sensors and catalytic converter.Yes, it can affect the oxygen sensors and catalytic converter.
All O2 sensors (AKA Air/Fuel sensors) are threaded into the exhaust system. Some before the catalytic converter (upstream) and some after the catalytic converter (downstream).
There are four oxygen sensors. Two are pre-catalyst and two are post-catalyst oxygen sensors. Basically, there is one sensor for each side of the engine in front of the catalytic converter and there are two sensors behind the catalytic converter.