Problem Code 161
03-13-2004, 06:22 PM
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Problem Code P0161 Hey guys I went to Auto Zone to check a SES light and what I got was P0161 I believe. What is that?
Last edited by dd11856; 03-13-2004 at 06:52 PM.
03-15-2004, 08:44 PM
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03-16-2004, 06:19 AM
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Make Chevy
Year 2000
Diagnostic Trouble Code (DTC) P0161
DTC Definition: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
Here's the search result. Not sure what it means though.
Dan
Year 2000
Diagnostic Trouble Code (DTC) P0161
DTC Definition: O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
Here's the search result. Not sure what it means though.
Dan
03-16-2004, 01:00 PM
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I had the same problem. The O2 sensors have heating elements to warm them up to operating temperature. It sounds like the heating element on the passenger rear O2 sensor is malfunctioning (That's assuming Bank2 = passenger and Sensor2 = rear sensor). The only way to fix it is to replace it.
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03-16-2004, 02:15 PM
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Yep, they are all right (except for the one converter guy).....my SES light is on for the exact same reason. I suppose 80,000 miles isn't bad for the old bank 2 downstream O2 sensor 
