PO158 error code on 2001MAX

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varkpilot - 11 Aug 2006 14:24 GMT

My friend/independent garage owner came up with this on his "unsophisticated
cmptr" [his quote].

O2 circuit Bank 2, Sensor 2 which means that the O2 sensor on rt side down
stream of the cat. convertier is out of tolerance and should be replaced.
Also, the engine control module [ECM] should be reprogrammed. He suggested I
take it to the dealer and have the whole system checked on their $15K
analyzer.

I have made an appointment.

However, I'm wondering if anyone has experienced this and can tell me what
bad news I might get from my dealer.

Thanks in advance [enjoy the boards....great info for the layperson!]

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Greg Madson - 12 Aug 2006 21:10 GMT

I just replaced both Bank 2 O2 sensors on my 02 SE with under 36K, and had the
ECM reprogrammed, after the Service Engine light came on. Just over $400 at the
dealership.

Common problem and Nissan knows it. I believe the reprogramming reduces the O2
sensors sensitivity. I also think they should be replaced under warranty,
because they're part of the emission system, but they're not covered.

> My friend/independent garage owner came up with this on his "unsophisticated
> cmptr" [his quote].
[quoted text clipped - 15 lines]
> Message posted via CarKB.com
> http://www.carkb.com/Uwe/Forums.aspx/nissan-maxima/200608/1

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