Lambda / O2 sensor

[thedon]

Just a quick note for the knowledge bank because I couldn't easily find this detail when I needed to replace my O2 sensors (aka Heated O2 Sensor, HO2S, Lambda sensor)...

 

I got an engine warning light with these fault codes:

P1146 - HO2S 2 bank 1 - minimum voltage

P1166 - HO2S 2 bank 2 - minimum voltage

P1147 - HO2S 2 bank 1 - maximum voltage

P1167 - HO2S 2 bank 2 - maximum voltage

 

The second sensors (HO2S 2) are rearward of the cats. Bank 1 is on the driver's side ('right'), bank 2 passenger side ('left').

http://nissanhelp.com/diy/z/projects/images/2005-2010-O2-sensor-location-nissan-z-01.jpg

 

Replacement parts are NTK part no. OZA554-N10 (bank 2, green plug) and OZA554-N9 (bank 1, blue plug). They are not interchangeable. Denso also available (part nos. 234-4302 left, 234-4312 right).

 

Best price I found for the NTKs was from Opie Oils - £165 delivered with 10% club discount.