Q&A

 Master

Theres only one camshaft sensor, depending on where this sensor is you may not be able to do it, not replacing this sensor will leave you stranded once the sensor is really bad once it starts going you get the check engine once it goes you'll need to be tow request a diagram of the sensor location at sinautoscan.com under forum al post up a diagram

 Rookie

sometimes all you need to do is install a firmware upgrade no big deal about $48 bucks at the dealer.