Mechanics

FOUND ERROR CODE P0430, HOW MANY O2 SENSORS ARE INSTALLED ON THIS AND WHERE IS HO2S SENSOR?

2007 Cadillac CTS • 75,000 miles

Check engine light on steady, seems to be running fine have noticed slight change in fuel economy, this just started 2 days ago but have not had a chance to look into it deeper
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Ejetboy
March 1, 2012.




There are 4 all on the exhaust before the converter



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