So what is the Primary oxygen sensor heater, I just reaplaced the ICM in the my del sol, the one I replaced it with may have been from a obd0 car, could it becausing the issue or did I knock something loose or forget to hook something up when I was working under the hood.

 

That would be your primary oxygen sensor. Just replace it, and clear the code.

 

Put a new o2 sensor in and reset the ECU and ur good to go.

 

Thanks Guys, I assuned it was the pimary o2 sensor,but it was the heater part that though me. When I started up car car it ran super rich for a little while then the cel came on, good all the gas from not having spart with an the bad icm fouled out the o2 sensor?