1996 Nissan Altima, Sudden Noise from the Exhaust

I have a 1996 Nissan Altima GXE. I suddenly noticed the more sound from my car (as if there is some problem in the exhaust). When I saw underneath my car, I saw some plug is hanging. I have no idea about what is this plug and there is some wire also plugged in to this plug. Can someone tell me whats the problem, before I take this to service center/dealer.

Reply to
agu1008
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Where did the plug come from? If it came from the wider part of the exhaust that is located under the shift lever (rough location) it might be the O2 senson in the catalytic convertor. if that fell out you should get a check engine light.

Reply to
bucksatan

Reply to
agu1008

that price seems pretty fair to me.

Reply to
bucksatan

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