Thread: 02 sensor?
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Old 05-05-2008, 06:24 PM
MBD MBD is offline
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Join Date: Mar 2002
Posts: 102
02 sensor?

How do you know if you need a 02 sensor? I replaced drivers side not long ago but continue to get secondary air code PO410 every 2 to 300 miles. Could I need passengers side also? w140 1999 S500 203K miles

Thanks
MB
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