sensor one is always closet to the engine usually in the exhaust manifold,bank two is the cylinder head that is furtherest back from the ft of engine.
That should be the sensor after the catalytic converter.
The 2000 Mazda Miata O2 sensor bank 1 is located on the firewall in the engine compartment. The sensor can be found on the passenger side of the firewall.
That would be the sensor after the catalytic converter.
It is the top one
The oxygen sensor for bank 1 sensor 1 for a 2000 mercury mountaineer is on the cylinder #1 side.
Sensor one is in the exhaust manifold on the back of the engine. Sensor two is in the side of the catalytic converter.
bank 2 sensor 2 is the passenger side, rear sensor, it is located behide the catalytic converter.
The P0155 refers to the Oxygen sensor on Bank 2, sensor 1. Bank 2 on your vehicle is on the passenger side of the engine. Sensor 1 is the first oxygen sensor in the exhaust pipe coming from the engine.
it has 4 o2 sensors #1 cylinder is sensor 1 or bank 1 sensorType your answer here...
It is the sensor in the outlet of the catalytic converter.
bank one is drivers side, sensor 2 is rear O2 sensor(oxygen sensors are screwed into exhaust pipes)
I've posted several photos of bank 1 sensor 1 & 2 on the mpvclub.com website. Bank 1 sensor 1 is nearly impossible without the right tools.