Iowa Chapter Director
Join Date: Jul 2002
Location: Ames, Iowa
yeah you're right, just a typo there.
I think it would go into open loop if just one O2 were bad, other wise it would be reading the air/fuel mix from just the other side of he engine, which would not necessarily be the right air/fuel for the other side of the engine.
1988 Notch Mustang: - 438W, direct port n2o, t56
2003 SVT Focus: - SCT X3 tuner