help with oxygen sensors
 

i got check engine light checked the codes myself and got a 0503, and 0707 in haynes manual it says one is the upstream oxygen sensor right bank, other is downstream oxygen sensor. i just need help to figue out which oxygen sensor to buy or are they all the same


thanks

One of them is a front heated o2 sensor, the other is a rear heated o2 sensor. I don't think they are the same. But your local Nissan parts shop would be able to verify that for you.

The aren't the same. The two front O2 sensors are the same but the rear is a different one. Go to www.oxygensensors.com and buy one of each. Then, read the How-To sticky for my guide to replace them.

ok thanks guys

went to the site do i need a three wire terminated or 4 , also for the front one do i need one or two on the site it says two required