All the O2 sensors are shot.
Only $240 to buy them all.
Buy them all.
Replace them all.
Done and done.

If you want to cheap out - then buy a Kia.

 

if you need 02 go to Amazon.com they are the cheapest, only use OEM sensors.
NEVER, repeat NEVER use Atlantic British replacements they are not OEM and will give you problems.

 

1) Check fuse 2 under the hood

2) make sure both rear O2 plugs are "snapped" together (you should hear the snap).

3) Make sure no dirt or grease got into the plugs when you replaced them.

4) Take a test light, Turn the key to the on position, unplug rear O2's and test the harness plugs for power. I believe you should have power at 2 out of the 4 pins in each plug.

5) If no power at the O2 plugs, then check the O2 power pins at connector C0635 of the ECM. This PDF will tell you which pins to test. (If you don't have power at the O2 plugs, but do have power at the ECM pins, then you have a short in the harness somewhere between the ECM and the O2 and need to start checking the harness wires.
O2 pin information.pdf

I hope this helps. Report Back please

 

Thanks for the info everyone, not you XXDOYLEXX, somebody's got stick stuck somewhere! Haven't yet checked the wiring, but I will soon. Will Post as soon as I know. I wish I knew everything like MR stick stuck somewhere. Neil