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need help..p0156 error code-o2 sensor bank2 sensor2

7629 Views 1 Reply 2 Participants Last post by  hossmaster
Hello, Need help. I have a 2001 4 runner v6, 2wd...I just got the dreaded engine light on. Both the trac lights came on also..Took it to Autozone and they provided me a p0156 malfunction code. they said it was a malfunctioning o2 sensor. It was the bank 2 sensor 2 one. Autozone couldn't tell me exactly where it was located. Questions..Is the sensor before or after the catalytic converter? Are there two sensors that I need to be replacing? Thank you for your time and help. :confused: J.Richards...
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that is the post cat sensor. the one farthest away from the motor.
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