[QUOTE]Originally posted by PA 3L SVT:
[QB]If the Bank 2 O2 sensor isn't showing any voltage fluctuation, my guess would be the following:
A) There is a malfunction in the heater circuit for that sensor.
B) There is a bad connection on that sensor.
Thanks for the reply and advice. I will run another diagnostic check and ceck out the Sensor itself. One thing I did not mention was that the first diagnostic check was done over a 30 minute period (and that was after coming home from a 1 hour drive from work with a 30 minute downtime in between)and the voltage for the sensor did not fluctuate at all during the run. So the sensor heating cycle should have been well past initiation. I will check for a PTC but there are no pending codes. Remember that I mentioned the other bank's counterpart sensor is switching so it is either how the cat monitor works with each bank, and I missed the part of the cycle during the diagnostic or it is something wrong with the O2 sensor, wiring etc.
