Front and Rear O2 Sensor readings

[sholdwick]

What are considered normal readings for the front and rear O2 sensor readings??

[Scottydoggs]

bank one's voltage should should dance up and down rather quickly.

no idea on the rear o2, in the early years it dont do much.

[BillBoost37]

Front will fluctuate from say 100 or less to 800 or a little over.. then some in the midst.. The faster the readings change the better.

Never honestly looked at a rear sensor reading.

[transam24]

If you look at a rear sensor on a graph it should remain steady if the cat is doing its job. If not it will fluctuate like the forward 02 sensor