On a Ford Ranger ( V6 engine )
Bank 2 is the drivers side of the engine
Sensor 1 would be close to the engine before the exhaust enters the catalytic converter
motorcraft . com just shows ( 1 ) oxygen sensor for all available engines in a 1991 Ford Ranger
I'm not a mechanic / technician but on a 1988 Ford Ranger there might be ( 1 ) oxygen sensor ( upstream sensor )
the o2 sensor is located on the exaust manifold
The O2 sensor after the catalytic converter.
It just has ( 1 ) oxygen sensor , before the catalytic converter ( upstream )
Where is the ford ranger 2004 revcounter sensor conected
you can breath
The P0141 code on a 1997 Ford Ranger indicates a problem with the oxygen sensor heater circuit for the bank 1 sensor 2. To fix this issue, first, inspect the wiring and connectors leading to the oxygen sensor for any damage or corrosion. If the wiring is intact, test the sensor itself and replace it if faulty. Additionally, check the fuse related to the oxygen sensor heater circuit and replace it if necessary.
Where are the Bank 1 Sensor 1 oxygen sensor on a 1998 ford explorer?
Bank 1 is the passenger side of your V6 in a Ford Ranger Sensor 1 is somewhere close to the engine before the exhaust enters the catalytic converter
in the exhaust pipes behind & in front of converters
sending wrong fuel ratio mix