* Bank 1, Sensor 1: Located in the exhaust manifold, just below the cylinder head.
* Bank 1, Sensor 2: Located in the exhaust pipe, just after the catalytic converter.
* Bank 2, Sensor 1: Located in the exhaust manifold, just below the cylinder head.
* Bank 2, Sensor 2: Located in the exhaust pipe, just after the catalytic converter.