Code 0153 o2 sensor, is this the left side upstream or downstream sensor? - JeepForum.com

 
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post #1 of 2 Old 10-29-2013, 10:08 AM Thread Starter
Jeepguy4276
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2002 KJ Liberty 
 
Join Date: Apr 2013
Location: Fargo
Posts: 416
Code 0153 o2 sensor, is this the left side upstream or downstream sensor?

I believe it's the driver's side back one but don't know which is upstream or downstream. Apparently I need to know for ordering the part.

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post #2 of 2 Old 10-29-2013, 10:24 AM
tommudd
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2004 KJ Liberty 
 
Join Date: Aug 2008
Location: Central OH/ Kilimanjaro,Tanzania
Posts: 5,719
upstream is before the converter ( nearest the engine ) , downstream is after and down by the transmission ( crossmember area)

04 KJ WITH JBA 4 INCH COILOVER LIFT
03 KJ WITH 2.5 TOTAL CONTROL LIFT
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