Assuming you mean bank 2 sensor 1, it would be the first O2 sensor located in the header pipe after the passenger side exhaust manifold.
pass.side at exe manifold Bank 1 is where cylender 1 is. Bank 2 is on the other side of which is on the passenger side of the blazer. Oxygen sensor 1 is the first sensor closer to the front of the blazer. Sensor 2 would be past the catalytic converter on the same side.
The bank 1 sensor 2 on a 1996 Chevy Blazer is mounted in the exhaust. Sensor two is just behind the catalytic converter.
I have a code DTC P0154.Bank 2 Sensor 1 no activity.Which sensor is this on my 96 Blazer?
It has 1 coolant sensor, 1 temperature sensor
It does not have 1
Trouble code P0135 means:O2 sensor heater circuit malfunction (Bank 1 Sensor 1)
O2 sensor circuit bank 1 sensor 2 no activity. Check the wiring and connections to bank 1 sensor 2 O2 sensor, if all looks good replace the sensor.
10 1/4 pints
driver side first o2 sensor
Upstream, driver side.
bottom of engine 1 bolt pull it out and put the new one in
it means knock sensor sensor 1 circuit high input (bank 1 or single sensor)