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O2 sensor wire under passenger dash works?

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mhuffman

15+ Year Contributor
292
4
Nov 3, 2006
Bowie, Maryland
I read from one site that you can monitor O2 sensor voltage by using a wire that is taped to the factory harness in the passenger side dash area. Has anyone tried this?
 
On a 1g there's a wire near the ECU for monitoring o2 signal? I'm not going to be using a gauge, im just going to boost a few times and see if the voltage drops below 0.85V with a multimeter.
 
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