I have a 1996 cadillac deville concours, an it has 4 oxygen sensors
There are a number of oxygen sensors on the 1997 Cadillac STS. These are found on the firewall, inside the exhaust manifold, and behind the catalytic converter depending on the engine model.
The oxygen sensors are located in the exhaust pipes.
The 1991 Cadillac Deville oxygen sensors are located on the firewall and the air cleaner housing. The firewall oxygen sensor will be on the drivers side. The air cleaner oxygen sensor will be on the back of the air cleaner housing.
It depends on the year. It could have between one and four.
Should be two front and rear of engine
bank 2 sensor 2 location
02 oxygen sensor circuit malfuction bank 1 sensor 1
Typically in the exhaust manifold just before the head-pipe or at the inlet of the head-pipe.
Just in front of the Cat converter, drivers side.