OK, found a few other threads that referred to the 'radio' fuse a 10a fuse...

pulled that one, had lunch, restarted, same error code.

Autozone sells a Bosch secondary O2 sensor for $58.

I looked and see where the sensor is, have a socket for it (slotted for the wires) and all that jazz, but the wires go into a grommet in the underbody,a nd I have no idea where they terminate/connect.

anyone care to point me in the right direction?

(or better yet, hook me up with the FSM in pdf format)