find out what signal the 2nd o2 sensor sends the ecu when functioning normally. get the correct ohm resistor and wire it in there. biggity bang.

you could always try leaving the 2nd o2 sensor on the exhaut so it heats up just not inside.

or...I have an obdII interfaced program on my palm pilot that does some neat tricks...one of which I know will clear CELs on dsms. might work for your car too if its obdII.

there i hope that was more helpful than "reset the ecu"
oh brother