Changed water pump, now have a CEL?

[WankelsRevenge]

I just changed my water pump a few weeks ago, and as soon as I started the car after I got done I was showing a check engine light. I took it to the local advance/auto zone and had it checked out. Error message showed up as bad camshaft sensor on banks 1 and 2. Now I was puzzled both by the fact the Yaris doesnt have two seperate banks, and the fact I didnt touch anythign electronical other then dosconnecting the battery and alternator. Do any of you guys know what I can do to get it to shut off?
Ryan

[CTScott]

Check the connector on the Camshaft Timing Oil Control Valve, which is located just above the alternator. Many have damaged either the connector or sensor when tightening the alternator.