buick Workshop Repair Guides

Buick Workshop Service and Repair Manuals

Front Heated Oxygen Sensors (HO2S)|Page 1082 > < Front Heated Oxygen Sensors (HO2S)
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DTC P0161 Bank 2 right rear HO2S heater. 

The PCM also has the ability to detect HO2S response, switching, transition time, and incorrect ratio voltage problems. If a HO2S response
switching, transition time, or ratio problem is detected, the PCM will store a DTC that indicates degraded HO2S performance.

LEGEND

(1) Four Wire In-Line Connector
(2) Heater Termination
(3) Water Shield Assembly
(4) Sensor Lead
(5) Flat Seat Shell
(6) Seat Gasket
(7) Outer Electrode and Protective Coating
(8) Rod Heater
(9) Inner Electrode
(10)Zirconia Element
(11)Insulator
(12)Clip Ring
(13)Gripper

Front Heated Oxygen Sensors (HO2S)|Page 1082 > < Front Heated Oxygen Sensors (HO2S)