P0138, P0139

A forum for the legendary Nissan Pathfinder and Infiniti QX4.
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thaomyt
Posts: 48
Joined: Thu Jul 31, 2008 8:37 pm
Car: 01 QX4, 08 Audi Q7, 08 Honda Odyssey
Location: Iowa

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P0138 & P0139 is the O2 sensor on Bank1 Sensor2 isn't it? is it on the passenger side?

thank you

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ARKQX33V6
Posts: 705
Joined: Fri Aug 06, 2010 3:35 pm

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Bank 1 = spark plug 1
Bank 2 = spark plug 2
Fore 1
Aft 2

Spark plugs 1 and 2 are on opposite sides V6, find note each and there is the location of each O2 sensor, now left/right, looking at or in the seat is meaningless.
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