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-   -   I can't locate my upstream 02 sensor? (http://forums.pelicanparts.com/101-projects-discussion-forum-bmw-3-series/768004-i-cant-locate-my-upstream-02-sensor.html)

Andres (guest) 08-26-2013 04:57 PM
On my 1991 318is I can't locate my upstream 02 sensor, did some models not come with one? I have fault code 1222 and wanted to replace my o2 sensor to try and correct it but I can only locate the downstream one underneath the car, should I bother replacing the downstream one?

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This post was auto-generated based upon a question asked on our tech article page here:

Kerry at Pelican Parts 08-26-2013 04:57 PM
The downstream one is the only one you have. Upstream and downstream o2 sensors didn't start to about 1996 due to OBD II regulations.

- Kerry


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