I changed my timing belt a couple weeks ago and ever since then I've gotten a CEL with several codes--mostly related to P0346 Camshaft Position Sensor "A" Circuit Range/Performance, bank 2. It's somewhat odd because to me the engine sounds fine... not sick or anything. The idle is consistent and it hasn't even thought about stalling.

If the camshaft chain on bank 2 was off a link, I would know for sure just by listening to it, right? What else could be the issue?

Also, I've been getting P0300 (Random Multiple Cylinder Misfires), P0301, P0302, and P0303 Cylinder misfires on 1, 2, and 3. I'm guessing they are related.

 

I took another listen at the engine today. It sounds like there may be faint popping (misfires?) when I jab at the throttle from idle.

 

Your timing belt isn't right, put it to TDC and double check the cam and crank marks. I bet you're advanced a tooth or two.