Ok, progress. As expected/predicted when I pulled back the sheath on the bank one, upstream O2 part of the 4 wires were fused and shorted (likely got too close to the exhaust manifold. Gonna butt splice all 4 wires or figure out some way to peal them apart without breaking them, reassemble the rest and hope that ends the ordeal. I’ll post back after I get there, probably inspect bank two to be sure that aren’t suffering similar fate.


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