There is one in each of the exhaust manifolds, and there may be a third one in the exhaust system, just past the catalytic converter. It takes a special socket.
They have a deville on YouTube with 28s on it
The 1995 Land Cruiser 4.5 liter engine O2 sensor is located on the air cleaner housing. The O2 sensor will be attached to the back of the air cleaner housing.
where is the secondary 02 sensor on a 2004 crv
under the crank case side panel.
exaust leaks , faster if its before the 02 sensor
02 sensor
P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2)P0139 02 Sensor Circuit Slow Response (Bank 1 Sensor 2)
I have that part # on a cadillac center console from an 02 deville
underneath the cam rod with the 02 sensor
You have a bad 02 sensor after the catalytic converter.
02 sensor heater curcuit malfunction (bank 1 sensor1)---change front 02 sensor if need be.
That would be the sensor in the exhaust after the catalytic converter ( downstream )