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Old 02-01-2012, 10:27 PM   #57 (permalink)
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If your car is OBD2 then the cat function is tested by the second O2 sensor which is there only to activate the CEL when it detects poor cat function.
I thinks cats are still covered by 8-80 emissions warranty which does not apply in your case, but does in Sentra's.

regards
Mech
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