1999 Nissan Maxima P0138 and P0325 - what to replace first?

stoneham · **Joined:** Sat Dec 06, 2008 10:55 am **Posts:** 1

I have a 1999 Nissan Maxima. CEL is on. OBD2 reder is throwing P0138 and P0325. Rear Oxygen sensor and Knock sensor. Should I replace Oxygen sensor first and see if the knock sensor code goes out or replace knock sensor first?

Is the rear oxygen sensor hard to replace?

Sponsored Links · **Joined:** 29 Jun 2004 08:12 pm **Posts:** N/A

asecmt · **Posted:** Sat Dec 06, 2008 3:57 pm

About every 7 out of 10 nissans that are scanned will have a p0325. This code by itself will not turn on the MIL. So I would change the bad o2 sensor.

1999 Nissan Maxima P0138 and P0325 - what to replace first?

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