I just checked for codes after wiring up my 4 wire o2 sensor, and I'm getting 6, 10, and 20.

Which I believe is::

ECT,
IAT, and
ELD.

What is weird is.. I checked just the other day and didn't get those ones.. Weird.

I wired the 4 wire to..

WHT - WHT/RED wire goes to D14 which is O2 Sensor Input
BLK - ORG/BLK wire goes to A6, which is Heater Control
GRN - GRN/WHT wire goes to D22 which is Sensor Ground
BLK - YEL/BLK wire goes to A25 which is Sensor voltage

Just like Poison's post.

My wire colors on the harness side plug were a bit different..

Like::

White - White
Black - Orange/White
Green - Green/White
Black - Yellow/Black

Or something close to that.

Help??

-Jason