Where is bank 1 in jeep liberty 2004 V6 3.7L ? - JeepForum.com
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Unread 01-05-2013, 08:58 AM   #1
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2004 KJ Liberty 
Join Date: Dec 2012
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Where is bank 1 in jeep liberty 2004 V6 3.7L ?

I need to change my o2 sensor in my car it is bank 1 sensor two I know sensor 2 is downstream but where is bank 1? a read in this forum about that some people say it on driver side and other say it in passenger side and some say bank one at the side of cylinder 1,2,3 and i don't know where these cylinder are , so can some one please tell me where is exactly bank one in my car is it driver side or passenger side ? thank you

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Unread 01-05-2013, 09:02 AM   #2
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Bank 1 = Driver side.
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Unread 01-05-2013, 02:02 PM   #3
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2003 KJ Liberty 
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Originally Posted by asim04LJ View Post
Bank 1 = Driver side.

Yep, bank one is driver's side. Cylinder 1 is on front driver's side, Cylinder 2 is on front passenger side.

2003 Renegade, Black
- 3.7L, 42RLE, 4.10's, 4X Guard Trans skid, Factory Engine, T-case, Tank skids, Modded BoulderBars sliders, OME 927/948, Bilsteins, JBA A-Arms & 1/4" top plate, 1 extra rear iso/side, Moabs with Firestone Destination AT's 255/70-16
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Unread 10-03-2014, 11:50 PM   #4
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can any one help me I have code po152 on jeep liberty 2004 3.7 ltr I saw on googel that code refers on 02 sensor bank 2 sensor 1 I to fix it I am little confuce
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Unread 10-04-2014, 07:54 AM   #5
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I'm usually not a big fan of just throwing parts on, but I had the same code on my 2011 Dodge Avenger and wound up just replacing the sensor. Only 60k on it but since the change a couple months back, no more code. My code was actually the other side or bank (P0132) but same high voltage on sensor 1. Your upstream sensor is the pre-catalytic converter one (closer to the engine near the exhaust manifold) on the passenger side as mentioned above. Tough to get to but they do go bad. If possible get an NTK. Bosch do not work well. I think they are a bit slow to respond.

Good description of code:

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