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My check engine light came on twice this week and I checked it tonight and it is a code P0152 which is Bank 2, sensor 1. My question is, which oxygen sensor is this? I know that Bank 2 in the driver side. I see there are two O2 sensors on the driver side. One is right after where the manifold bolts to the engine and the other is a little further down bolted to what looks like the catalytic converter. So, which is sensor 1?
 
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