I need to replace the oxygen sensor located behind the engine on the exhaust manifold. How is this done???

I have a special socket that is slotted out to fit over the sensor wires, but
can't even get this socket over the sensor, let alone get a ratchet on the socket.

Thinking that I will need to unbolt the exhaust from the manifold to get clear access to this sensor.

Can someone tell me how this is done ???

 

You can cut the wires off at the sensor and remove the sensor with a 22mm/ 7/8 deep socket. Or a box end wrench. Or find someone with the o2 sensor sensor tool.

 

out of interest, what would this job cost at the dealers?

 

What ever is the labor rate for one hour to replace the part, and one hour to pull codes and get a p/a on the part.