where is the bank1 o2 sensor at and how do i change it please i need your help
in the exhaust manifold
it is the one before the cat converter
Bank one are before the Cat and bank 2 are after the Cat.
Bank one sensor one is above the converter.
Bank 1 is the oxygen sensor either screwed into ,or above the catalytic converter. Bank 2 is below the catalytic converter.
Passenger side exhaust
That would be the sensor after the catalytic converter.
It would be the sensor after the catalytic converter.
behind the catalytic converter
it is the upper stream o2 sensor before the convertor
Your in luck...that should be the oxygen sensor in the exhaust manifold at the front of the engine compartment. Bank 2 is the bank of cylinders that does NOT contain the #1 cylinder. That bank is bank 1. Sensor 1 is the oxygen sensor upstream of the catalytic converter, and sensor 2 is the one after the cat.
Bank 1 sensor 2 is the sensor after the catalytic converterBank 1 sensor 2 is the sensor after the catalytic converter