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Discussion Starter · #1 ·
The O2 sensor on the left bank is running at extremely low voltage. I believe .1 to 1 volt is in spec. This one is reading .10 to .94 mV.

I had to rewire part of the harness to that sensor where a header burnt it up. I was careful to make sure the new wires are leading to the right place. They were soldered and taped.

I have swapped sensors and the problem stayed on the left bank.

I've read that sensor voltage is not a critical measurement, but this seems a bit extreme.

Fuel trim values also seem to vary quite a bit from left to right, as well. Not sure what to make of it.

Any thoughts?
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