Well, I'm assuming you have a European Gen 2. The oxygen sensor code you're seeing is for a fault in that. You'd have to check the Kawi part numbers to see if the Gen 3 and Gen 2 sensors are the same to know for sure if you could get a different one. But they are only 2 wires, so swapping the connectors over would be a piece of cake.
You can do a voltage check on the sensor. The procedure is in the service manual, but it's rather involved checking the various voltage ranges with and without the air switching valve in place to check that the sensor voltage changes.
You can do a voltage check on the sensor. The procedure is in the service manual, but it's rather involved checking the various voltage ranges with and without the air switching valve in place to check that the sensor voltage changes.