You didn't say what year or model Ford you have but in general there are two CC'S and four O2 sensors. The Ford onboard computer runs periodic checks of the CC by momentatially running the bank under test extra rich (to much gas) this will cause a hight HydroCarbon reading of the upstream O2...
Yes they should, very much. The next time the U.S. Government is in trouble, for hardware, like for WWII, Korea, Vietnam and so on. Will they call on Toyota or Honda.