reviving a dead post...
@cobbcj7 & @Jlc ... did you ever find out the cause of the popped F2 fuse?

 

I've tracked it down to the same connector. But it's still driving me insane.

Mine was throwing codes for a while then just died in a Wendys drive through.

Do the o2 sensor heaters share a voltage rail with something else thst could be shorted?

 

Fuse F2 controls EMS/ECU... air injection valve, purge valve, camshaft position sensor, EVAP canister, leak detection pump, all 4 O2 sensors, & MAF.