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I do not know where my oxygen sensor is located on my 2002 buick century.

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Posted on Oct 16, 2010


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I battled this on my 1999 Buick Century with 3.1 liter engine...
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2003 buick century where is the oxygen sensor

Hello guys, this picture may be able to help you. oxygen sensor

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Jun 20, 2011 | 1998 Buick Century

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I have a 2002 buick century and have replaced catalytic converter and both oxygen sensor and the check engine light is still on ... getting dtc codes p0420 and p1134 ..

Reset the ECM by taking out the negative battery terminal off your battery and leaving it aside for several minutes.

Jun 14, 2011 | 2002 Buick Century

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Where is the oxygen sensor

It's on the rear exhaust manifold. You will need a oxygen sensor socket to remove it. If you are not saving it & tend to replace it, snip wires & use a normal socket. Saves the price of the special socket! Good luck!

Oct 10, 2009 | 1993 Buick Century

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2002 buick century cooling fan sensor

I am Welsea Zhang in China
In China, we always meet a problem from Buick car,the problem of fan sensor wire always burned while run 4-50000km, does America meet the same problem?
Waiting for your kind reply
my email is
Many thanks and best regards

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in order to answer your question i need to know the engine size or at least how many cylinders the car has thank you.

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