Turboed_talon_tsi
Proven Member
- 32
- 5
- Feb 23, 2022
-
North Dakota
I’m replacing my upstream o2 sensor at the moment and I ran into a wire I’m not familiar with. My new o2 sensor has the 4 wires that go from the o2 to the sensor connector and I think I got that figured out. There is an extra wire that runs from the o2 that goes back and near my fuel stuff and firewall, not exactly sure where too. Last owner did a crappy job by the looks of it. Hoping someone can help me identify it. Is it related to my air/fuel ratio gauge? I’ll attach pictures below, thanks!
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