P0154 error code

Has anyone come across this code yet? Is it simply the O2 sensor gone bad or is there more things I should be looking at? I was going to just change out the sensor, but they are pretty pricey.

Thanks
 
Thanks, I have the error code info and I am looking for more information. Is there anything else that could be causing the code to pop up, or is it just the sensor that is failing? No activity seems to mean the sensor or wire going to the sensor is bad.

Thoughts?

Thanks!

J.
 
Loom or sensor.

Simple test is to replace sensor with a known working one, if it doesn't resolve, then check the loom to the ECM :)

Dave
 
I have a tech who is telling me that the Vent Valve may be the problem and I should swap that out. Any thoughts on the connection with P0154 and the Vent Valve? I will order an 02 sensor, but it seems odd that the one code could be related to the vent valve. I don't drive the car in the winter. Year: 2003.

Thanks
 
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