Bad O2 Sensor

[immgunn_imp]

I have way more experience with cars than M/C's, but with cars, an O2 sensor code doesn't mean to replace the O2 sensor, it means there's something wrong with the O2 sensor circuit/system. Could be a sensor, a bad connection, some other problem affecting the sensor. If the sensor is fuel fouled, try a 3000 rpm tune-up. With the engine at operating temperature, hold it at a high rpm while creating a lean condition for a minute or so. This will clean a fuel fouled sensor. I've even seen it clean a silicone poisoned sensor. Good luck.