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Discussion Starter · #1 ·
So my check engine light has been on for a bit but I have ignored it as it wans't really bugging me. I finally got to replacing the upwind 02 this weekend as it was throwing two codes for the upsteam 02 being had. I replaced it with a universal bosch that I spliced myself. I pulled the battery thus resetting the computer and it was good for about 10 minutes. The light has turned back on. Now the computer is throwing one code that it is not receiving information for the front 02 sensor. It was a brand new Bosch universal that the guys at Trak told me really never had problems, but other than it being a bad O2 I can't think of what it could be.

Anyone have any suggestions for troubleshooting/correcting this problem. Any help would be much appreciated.

2004 1.7L 4 cyl if that helps any.
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