Code 0153 o2 sensor, is this the left side upstream or downstream sensor? - JeepForum.com
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Go Back JeepForum.com > Models > Jeep Liberty Forums > KJ Liberty Forum > Code 0153 o2 sensor, is this the left side upstream or downstream sensor?

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Unread 10-29-2013, 10:08 AM   #1
Jeepguy4276
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Join Date: Apr 2013
Location: Fargo, North dakota
Posts: 305
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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Unread 10-29-2013, 10:24 AM   #2
tommudd
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2004 KJ Liberty 
 
Join Date: Aug 2008
Location: Central OH/ Moshi Tanzania, Ohio/Tanzania
Posts: 4,118
upstream is before the converter ( nearest the engine ) , downstream is after and down by the transmission ( crossmember area)
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