O2 sensor connections
Yep that's the idea. It's not difficult to trace the wires into the e-box where you can determine continuity. I did when I was trying to solve an O2 sensor heater issue that wouldn't go away.
Come to think of it, also how to determine which wire for which sensor. TIS will have the pinout.
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2011 E70 • N55 (me)
2012 E70 • N63 (wife)
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