zerothread/209037
It's not clearly listed, but yes there was a pre cat recall on 02 Sentra's. I would just call the local stealership, simply ask if they can check your vin for any recalls and see what they say. I wouldn't mention anything about the motor at first. Just get a feel for what they have to say. If there is a pre cat recall and it was never done, then at least you have a leg to stand on. Excessive oil consumption could also be your problem. They are know to drink oil, have you noticed any consumption issues?