This doesn't seem right to me at all.
First off, I strongly disagree with Tony's assessment of the situation. Secondly, I'm not certain of what problem actually exists here. Does the lambda symbol appear in C-Com for you?
I am concerned that you are chasing a ghost. Before you send anything anywhere, please do me a favor and post the following values:
With car running and sensor plugged in:
UEGO (V)
UEGOS (V)
UEGOR (V)
Diag A
Then please check the same sensors with the ign on, car NOT running, and the sensor disconnected. This will tell us a lot more of the story. If you wouldn't mind, please get me your serial number if you have a second as well. I will tell you if there are any "firmware glitches" that we should be concerned about. Right now I really doubt it.