That depends on the make , model, and engine.
Bank 1 is the same side as cylinder #1. sensor 2 is after the catalytic converter.
Bank 1 = Cylinder 1/Drivers Side Bank 1 Sensor 1 = Upstream (before cat) Drivers Side Bank 1 Sensor 2 = Downstream (after cat) Drivers Side Bank 2 Sensor 1 = Upstream (before cat) Pass Side Bank 2 Sensor 2 = Downstream (after cat) Pass Side
Bank 1 is the driver's side, bank 2 is the passenger side. Then you will have sensor 1 and sensor 2. Sensor 1 is before the catalytic converter (closest to the engine), and sensor 2 is after the catalytic converter. So Bank 1, Sensor 2 is: the driver's side , after the catalytic converter.
Bank 1 is usually on the driver side of the motor and bank 2 is the passenger, sensor 1 is the one on the header and sensor 2 would be after the catalytic converters Bank 1 is the same side as cylinder #1. Bank 2 is the other side.
both sides you need to know which bank you are working on the scanner should have said something like bank 1 sensor 1 or bank 1 sensor 2 a bank is a side of the motor bank 1 is the side with cylinder #1 and the the other side is bank 2 if it is sensor 1 then that is before the catalytic converter if it sensor 2 then it is after the cat. hope that helps
Bank 1 Sensor 1- driver's side exhaust pipe Bank 1 Sensor 2-right before catalytic converter Bank 1 Sensor 3- right after catalytic converter Bank 1 Sensor 1- passenger side exhaust pipe Bank 1 Sensor 1- driver's side exhaust pipe Bank 1 Sensor 2-right before catalytic converter Bank 1 Sensor 3- right after catalytic converter Bank 2 Sensor 1- passenger side exhaust pipe
Bank 1 is the same side as cylinder #1. Sensor 2 is after the catalytic converter.
bank 1 = passenger side bank 2 = driver side sensor 1 = pre-cat sensor 2 = post-cat
bank 1 is upstream bank2 is downstream sensor1 is on cylinder1 side upstream sensor 2 is the other side usually passinger side,bank 2 refers to sensor after converter
Bank 1 is the same side of the engine as cylinder #1. Sensor 2 is after the catalytic converter.
#1 cylinder is on the left side so bank 2 is the right side sensor 1 is before the cat sensor 2 is after the cat
o2 sensors are numbered like this: bank 1 is on the side with cylinder #1. bank 2 is the other side. sensor 1 is before the catalytic converter, sensor 2 is after.
bank 2 is the opposite side of cylinder #1. check the plugwires to see what side #1 cylinder is on and its the other side oxygen sensor