Questions and Answers

Maxima O2 Sensors

Q. How can I reach the O2 sensor in my 1997 Nissan Maxima SE? Do I need to go under the car?

Thanks for your help.

A. Yes, you do. There are actually two O2 sensors on that cat, one before the catalytic converter and one after. There is a special O2 sensor socket to remove them, but you can use a 22 mm wrench to remove it as well.