Where to locate the Four oxygen sensor on a 1998 Honda passport?

On a 1998 Honda Passport, there are typically four oxygen sensors: two upstream (pre-catalytic converter) and two downstream (post-catalytic converter). The upstream sensors are located on the exhaust manifold, while the downstream sensors are found on the exhaust pipes after the catalytic converter. To access them, you may need to lift the vehicle and possibly remove components for better visibility and access. Always refer to a repair manual for detailed guidance specific to your vehicle.