We just replaced the inbound O2 sensor a few days ago and now have the codes P0302 (#2 misfire) and P2097 (outbound O2 sensor). I've read in several places that the P2097 could also indicate a bad plug or wire. Any input in this would be greatly appreciated.

J.R.

 

The only recommendation I would make for any electrical problem would be to first check all of your grounds.

On my Pacifica, my O2 sensor was screwing up and running rich due to a bad ground wire.

It's easy to check, clean or replace and it's often overlooked.