very possible.
that recall is further described here,
http://en.wikipedia.org/wiki/Toyota_ZZ_engine
i would call toy. one of the symptoms is harsh shifting. that code maybe a result.
FYI,
codes pointing to sensors, doesn't always mean a sensor is bad. just that a sensor is sending incorrect/incompatible info to the ecm. so if the ecm is suspect, well, there ya go.
wouldn't be surprised if the the ecm is in limp mode now.