There are 2 oxygen sensors, one i on exhaust manifold tubing , can be seen from drivers side of engine and second one is behind catalytic converter .
in the exhaust manifold
where is the bank1 o2 sensor at and how do i change it please i need your help
it is the one before the cat converter
Bank one are before the Cat and bank 2 are after the Cat.
Before the catalyst, driver side.
on the driver side
The bank 2, Oxygen sensor 2, on a 1999 Mitsubishi Diamante is located on the passenger side of the vehicle. It is in the exhaust in the undercarriage.
02 sensor CKT slow response (bank 1, sensor 1) That should be the first sensor on the front of the engine if I remember correctly. Good luck.
driver side
your bank 2 sensor is the o2 sensor on your passenger side exhaust manifold
Left and right oxygen sensor not working.Toyota camry 6 cyl,1999
The exhaust system has two banks. Each bank has two oxygen sensors. Bank one is on the driver's side. Oxygen sensor 1 is between the exhaust manifold and the catalytic converter. Oxygen sensor 2 is behind the converter.