I got a CEL recently.
Have autozone pulled the code today and got p0138 and p0139.
It Seems like I have to replace my o2 sensor.
My question is what size of the socket or wrench I should use?
If I remember correctly, someone said I need a 22mm wrench or socket.
However, I can only found 7/8" o2 sensor socket.
Can I use it?

Any extra thing I have to know to replace the o2 sensor?

 

A while back I got a free O2 sensor socket when I bought a Bosch sensor for my truck. I used it on my max and it fits no problem.

 

I USED REGULAR (FLAT) 22mm WRENCH WITHOUT EVEN LIFTING FRONT OF THE CAR (2001 SE). IT TOOK ME ABOUT 20 MIN. TO DO IT