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2002 cadillac deville
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1 Posts
Discussion Starter · #1 ·
I've located and removed 2 of the 3 (i believe there are only 3) oxygen sensors on the vehicle. One was about the middle of the car and the other was up under the hood on the drivers side. I can't seem to locate the 3rd sensor to pull it out to replace, anyone have any idea where it's located?

Thanks!
 

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Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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72,798 Posts
Here you go...........and the last one you're looking for will try your soul to replace.

Did you have definite failure codes or what prompted you to replace the sensors - they're pretty reliable.

Bank one is the front (left) bank, so B1S1 is the one in the front exhaust manifold collector area. B2S1 is in the top of the rear (right) exhaust manifold, while B2S2 is the after-cat sensor.
 
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