I just installed stage 2 cams. My car through a cam sensor mil, when we fired it up. I also used adjustable cam gears, so I'm wondering if the tooth on the cam gear is not big enough to trigger the sensor? Just something for you to consider when installing the gears. I think I may swap back to the stock gears, if my alternator is not causing this code. I replaced the cam sensor and still get the mil light.