AMPPRC
10+ Year Contributor
- 114
- 0
- Sep 30, 2008
-
Desoto,
Missouri
my check engine light is on it reads that it my upstream O2 sencer i replaced it and the light went off for about for day and now it is back on. why did it come back on?
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check engine lights on
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luv2rallye
DSM Wiseman
- 8,997
- 1,691
- Jun 7, 2003
-
Minneapolis,
Minnesota
If you rewired it you may have miswired the 2 grounds.
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