Acute onset O2 sensor(s) failure; x4; hmmmm??

[originaliowan]

The other day my well cared for 2005 S4 avant with 86k miles lit up my MIL light. I simply started it up to idle for 15 minutes, and warm up before going home from work (I live in Alaska). Invested in a Ross-Tech VCDS and it provided the following information with an Auto-Scan: ____________ 4 Faults Found: 16440 - Oxygen (Lambda) Sensor B2 S2: Heating Circuit P0056 - 004 - Malfunction / Open Circuit - MIL ON 17548 - Oxygen (Lambda) Sensor; B2 S2 P1140 - 004 - Internal Resistance too High - MIL ON 16420 - Oxygen (Lambda) Sensor B1 S2: Heating Circuit P0036 - 004 - Malfunction / Open Circuit - MIL ON 17522 - Oxygen (Lambda) Sensor; B1 S2 P1114 - 004 - Internal Resistance too High - MIL ON Readiness: 0010 1101 Mode 07: Pending emission related fault codes Address 10 (Engine): 4 Faults Found: P0056 - Oxygen (Lambda) Sensor B2 S2: Heating Circuit: Malfunction / Open Circuit P0161 - Oxygen (Lambda) Sensor B2 S2; Heating Circuit: Malfunction P0036 - Oxygen (Lambda) Sensor B1 S2: Heating Circuit: Malfunction / Open Circuit P0141 - Oxygen (Lambda) Sensor B1 S2; Heating Circuit: Malfunction _____________ Obviously it provided more information than provided, but this seemed to be applicable. It does not make sense that multiple O2 sensors would fail all at this same time. I checked fuses in driver door, and all looks good. Any ideas crew? Any and all help would be appreciated. ap