Originally Posted by escottcarp
The code is for bank two. The Advance Auto rep said that was the rear sensor.
As is usual the Advance Auto rep doesn't know "it" from Shinola. There are two cylinder banks, 1 and 2, 1 being that on the passenger side. Each bank has two O² sensors one upstream of the cats (#1) and one downstream of the cats (#2):
The sensors are referred to as shown in the diagram, HO2S-12
for instance is H
eated O² S
ensor - bank 1
Before you start buying O² sensors you need to find out what the code(s) were as most of the DTCs mentioning "O² sensor" in the generic description (which is what the FLAPS people work from) indicate a good sensor reporting some other problem. When you get the codes look them up here
to see what the shop manual say about them, including possible causes and diagnostic tips...
- 2003 GT, UPR X, FRPP 24lb/h, Magnaflow, PP 70mm TB & plenum, Delta Force tuned,
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