Where is the Oxygen sensor for a 2004 Isuzu Ascender located?

The oxygen sensor on a 2004 Isuzu Ascender is typically located in the exhaust system. There are usually two sensors: one is positioned upstream (before the catalytic converter) and the other downstream (after the catalytic converter). The upstream sensor is often located on the exhaust manifold or the pipe leading from it, while the downstream sensor is found further along the exhaust system. For precise location, it's recommended to consult the vehicle's service manual or a repair guide.