Ralphw62

Hi, I think I have this nailed down as to which one it is,,, but just to be sure
can anyone please point me to the exact sensor this is?

PO130 bank 1 sensor 1

Thank you very much!!!!
Ralph

CS_AR

Welcome to Maxima.org. How many miles to you have on your Max?

Here's a bit of information for determining "Bank 1" on a V engine. Bank 1 is associated with Cylinder 1. Cylinder 1 is on the "right side" of the engine nearest to the firewall. Sensor 1 is the upstream sensor that is just below the exhaust manifold. The Right vs. Left side is determined from the rear of the engine. The rear of an engine is connected to the transmission.

Personal Approach: I like to replace O2 sensors in sets like spark plugs and windshield wipers. I've found that if one starts to throw codes or gets lazy, the other(s) will soon follow. I've never had a lazy O2 sensor throw a code. However, when I replace lazy O2 sensors (when I buy a car with over 100,000 miles) I can see an a small increase (like ~1 to ~2 MPG) and improved low end performance around town. I like to use NTK/NGK OEM spec O2 sensors on my Nissan/Infiniti products.

Here's a picture of a lazy O2 sensor (right) compared to a new one (left). The old sensor had not started throwing CEL codes, but my MPG started taking a hit after 120,000 miles.



Here's a picture of the tools I used to replace Maxima O2 sensors. Also, depending on car and O2 sensor location, I have used a 22mm open end wrench with success.

Ralphw62

Nice post...Thank you very much!!