pulled 4 codes, all to do with o2 sensors

[Qxxx4]

slickroger scanned my truck with his OBD2 code reader and i got 4 different codes all to do with o2 sensors, not sure if their for the primary and the secondary sensors or just one. We cleared the codes and i will scan again another time. Just wondering....i passed emissions test today with flying colours, if my o2 sensors were bad wouldnt i have failed?

[slickroger]

these were the codes read and the 4th code said 1760 and i dont know what that is.

P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)P0160 O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)P0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)