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P0161 Diagnostic Trouble Code Discussion for January 2010

Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Performance

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Trouble Ticket Help Requests for DTC P0161
Help Request Posted
2002 BMW X5 3.0i 3.0L MIL Lamp on VIN: XXXLP54050
P0161: Insufficient heat output oxygen sensor bank2 behind cat. ... many codes in many modules as the car had not been serviced in a long time, and the battery was weak. 2 codes in DME, BF Insuffcient heat output oxygen sensor behind Cat bank 2. The other code was for an evap leak. Ran the evap test (GT1) and it passed...
January 27, 2010