Hello all I have a 2005 expl 4.0 sohc. It has code p0171 too lean bank 1 code p0175 too richbank 2 code p02198 sensor stuck rich bank 2 sensor 1. I have replaced intake gaskets and pcv valve. I cleared codes and they come back truck will barely run. I swapped both front o2 sensors and codes come back the same.I am a mechanic on school buses but this is kicking my butt any help is appreciated. I also cleaned mass air flow with brake cleaner.Anyone ever ran into this before?