No, I believe your PCM does not monitor emissions after your cat. Unless you just happen to see an O2 sensor after it, but I doubt it.
Have a pen and paper ready. It helps to be in a dark area to see the check engine light because you have to count how many times it flashes.
Find your diagnostic port, usually below the knee panel under the steering wheel.
Take a paper clip and jump pins A and B
Turn your ignition to power on. DO NOT START IT.
Your first code should be 12 I believe. This is the code for that everything is working.
Now count the rest of them and get back to us.