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PO325, po138, po139 code on a Nissan Max 1998 Forums > > PO325, po138, po139 code on a Nissan Max 1998 PO325, po138, po139 code on a Nissan Max 1998
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Old 08-19-2009, 06:53 AM
jjdeparis
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Default PO325, po138, po139 code on a Nissan Max 1998

Hello there, i have a nissan Max 1998 with a check engine light on, i have the car scanned at Auto zone where i have the code po325, po138, po139, i am wondering what do them mean, causes and how to fix them. I am not really familiar on fixing car. thank
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Old 08-20-2009, 09:33 AM
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Here is the information for Nissan engine codes: Nissan OBDII Code Chart P0000-P0175

For the P0138 and P0139 it may require to replaced the rear O2 sensors and for the P0325 the knock sensor.
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Old 10-19-2009, 08:04 PM
sasidhar_ks
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Hi,

My 1999 Maxima gave the same, P0138 (O2 sensor) & P0325 (Knock Sensor).
Can somebody help me locate where these parts are in my car. I would like to replace them myself. If possible, pls place pictures of these parts where they are in the car and instructions on how to replace them. I'm really interested in doing this myself but not much familiar as this is my first car.

I've kept my car in open in Phx for three months at a friends place while I was away.
Car started only after charging the battery for 1hr or more connecting other cars battery.

I've changed oil immediately. Since the first start, it's giving a squeaking sound.
Is there any relation to the above codes with the sound on starting the car. If the car is hot, it'll make noise on start. But, in the morning when I start, it's certainly give the noise on starting the engine.


Thank you,
Sasi
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