Experiencing Bank #2 sensor(oxygen) intermittent, read code at Auto Zone. Car now @97,000miles. I believe 01' Max has (3) total oxygen sensors(Is This True?) ,looks like 3-wire sensors,should I change-out all sensors required, or just the suppected sensor? They are not cheap, and is Bosch,or aftermarket O.K. or buy OEM Thanks for any advise and direction

 

you can buy them on ebay cheap. just change the one you are getting a read on. you might try a bottle of good fuel injection cleaner first some times that cures the issue

 

they r a 3 wire sencer and if u r replacing one i would tack the time and just doo them all. and around 80-90k miles u wont to do them all. the most inportan thing is that u get more 3 wire ot sencers and i wouldnt buy them off ebay that is the worst thing u could do. if i were u i would just get some oem ones then they have a wornty.