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Discussion Starter · #1 ·
I have a 2005 V6 Frontier with 100,000 miles on. I recently purchased a Bluetooth OBD II scanner and I am using the Torque App to view the data.

Here are the issues I am seeing, and I wanted to see if anyone else has seen anything similar. I want to make sure this is not due to incorrectly displayed information in the Torque App.

Wide-Band O2 in bank 1 varies but rests at 0.3 V.
Wide-Band O2 in bank 2 varies but rests at 0.6 V.

I assume these are "calculated" voltages since the wide-band do not give a normal O2 voltage correct?

Secondary O2 in both banks vary (0.1 to 0.9) but rest at 0.7-0.8 V.

You can see additional details and screenshots here: Original Tune-Up Post

My question is this: I have a cross country drive pending and I know I need to replace the exhaust system (CAT back) because it is leaking. With the information above, should I also be replacing the O2 sensor (Wide-band or all 4), and possibly the CATs as well?

Thank you for your help.
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