There are several O2 sensors on that vehicle and they are are threaded into the exhaust system at various points.
what is the wiring diagram for the o2 sensor on 2000 s10 blazer. it has 4 wires. what what do they all do /
on the top of the intake
Inside the distributor.
2.2l is behind cat converter
That should be the sensor located after the catalytic converter.
It's a code for the oxygen sensor.
extended pickup
That vehicle has several oxygen sensors and they are all threaded into the exhaust at various points.
Bank 1 sensor 3 would be the O2 sensor after the catalytic converter.
left side back of engine by dist.
The check engine light would come on.
Downstream ... This is after the Catalyst Converter.