Originally posted by mbonanni
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1221 is an o2 sensor fault code. Judging by those numbers the o2 sensor probably needs replacing. If that doesn't solve it, check the MAF, o2 relay, or worse comes to worse put another DME in it. Since you have a Non-Vanos Motor, you'll want the 402 one should you have to go that route.
1222 is similar as it may be an o2 sensor or vacuum leak.
For 100 bucks I would say just change the o2 sensor as it's good maintenance. See if that helps, then use process of elimination to solve the problem.
Smog is frustrating, but you'll get through it!
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