[HIPPO]

The rear outer cam bearing was changed from the ball bearing to the roller bearing in mid december of 99, meaning that there are a lot of 00 bikes with the problem bearing.

There are also some instances starting to show up where even though the bikes have the rear roller bearing the front ball bearing has failed. As of now they are pretty rare, but they are out there.

It doesn't mean much unless you narrow down the source of the noise.

 

[HIPPO]

If the engine was manufactured on 01/19/00 you have the rear outer roller cam bearing. There have been no problems with this bearing.

All the TC's have the front outer ball cam bearing. Like I said there are known failures but they are rare and happen at much higher mileage then with the rear ball bearing. In addition I don't think that a partial failure of this bearing would set a cam sensor code as the signal is picked up from the rear cam gear.

You guys worry too much, these things make lots of agricultural noises, doesn't mean a thing. They are designed for low cost and unskilled or robotic assembly.
If you are going to tear the thing down for every little noise you waste a lot of time and find nothing, unless you are going to blueprint it from A to Z. Way too expensive for a street bike. Ride the sumbitch and if it blows up fix it.

This doesn't mean you should not find the cause of the code as these things sooner or later bite you in the a$$ and you already know you have a specific problem.