p0161 O2 Sensor Heater Circuit (Bank 2 Sensor 2) - JeepForum.com
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Unread 01-02-2009, 07:07 AM   #1
DaniLaurette
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Join Date: Jan 2009
Location: New Jersey
Posts: 9
p0161 O2 Sensor Heater Circuit (Bank 2 Sensor 2)

Ok Guys,

Question for ya. Now that i know my 02 libby needs a new o2 heater sensor, how do know which one to buy and which one to replace?? I understand there are 4 of them, im just clueless to which one is needed to be replaced.

Much help needed

Thanks
Dani

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Unread 01-19-2009, 03:04 PM   #2
oldcarjeepguy
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Join Date: Nov 2007
Location: NC
Posts: 10
Bank 1 is the drivers side. Sensor one is the first one after the exhaust manifold and sensor 2 is the one after the mini cat. converter. Bank 2 is on the pasenger side. The are sometime called upstream and downstream.
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