Where is the bank one oxygen sensor on a 1996 Dodge Grand Caravan?

On a 1996 Dodge Grand Caravan, the single oxygen sensor (since it's pre-OBDII, it only has one) is located in the exhaust manifold or exhaust pipe before the catalytic converter. Its exact location will vary slightly depending on the engine (3.0L or 3.3L), but it's always in that general area downstream of the engine but upstream of the catalytic converter. You'll likely need to look underneath the vehicle to find it. It's usually a threaded sensor with a wire harness connected.