Instead of "Bank 1, Sensor 2", you'll likely find it referred to by its location relative to the exhaust manifold or catalytic converter. You'll need to consult a repair manual specific to your 1998 Oldsmobile Intrigue 3800 Series II (check the VIN for precise engine details). These manuals will show you the exact sensor locations with diagrams and potentially even sensor numbers.
To find the likely location:
* Sensor 2 generally refers to a downstream oxygen sensor. This sensor is located *after* the catalytic converter. This sensor monitors the catalytic converter's efficiency.
* Bank 1 usually refers to the side of the engine containing cylinder #1. On a V6, cylinder #1 is typically on the passenger side of the engine bay (in US vehicles).
Therefore, look for an oxygen sensor on the passenger side of your engine, positioned downstream (after) the catalytic converter. It will likely have a wiring harness connected to it. Again, a repair manual is your best resource to confirm its precise location and avoid damaging other parts.
