Hi all. I failed emissions inspection. I failed for hydrocarbons and NO2, but not carbon monoxide. It has a recent tune up, a new ICU, coil, and I think it runs great for a car with 150,000 miles. It was really cold the day I had the inspection done, maybe my car doesn't warm up enough for the catalytic converter to work. I'm leaning towards replacing the catalytic converter and the oxygen sensor. I was wondering if anyone else had any ideas. Thanks.

You are right 100%. It is your catalytic converter.

Have it change and you'll pass with flying colors.

I did mine.....