Just replaced O2 Sensor, Check engine light still on!

[Snappie]

Hi,

My check engine light has been on for about a week now, and I diagnosed the code (OBD I) and got 1221, EGO sensor # 1. I replaced my O2 sensor about 1 hour ago, and I turn on my car and still get the check engine light with the same fault code. What could be wrong?? Do I have to give it time to adjust or is something else causing the problem?

Alex
93 325is
120k

[UD///M]

Two things. Maybe you need to replace both sensors. You probably need to have the code cleared in order to turn off the light.

[Snappie]

I was told that there's only one sensor (the one in the catalyic convertor)???? I have OBD I... Is there another sensor?

[Snappie]

Finally, after 10-15 minutes of driving, that damn light went away. I'm so happy now! Thanks for your help