Camshaft position sensor?

With cleaning the idle air system, you also remove the throttle body and clean it real good, especially the small passages, you can use a wire to make sure they aren't clogged and clean the throttle body throat. If the problem is caused by something else, doing that probably won't help except as maintenance.

Did the codes go away after you replaced the sensors or are they still present? The po341 means the cam and crank sensor signals are not in sync. Most often caused by the cam sensor and or wiring circuit. Is there an extended crank time?

From here, I can't tell if signal is dropping out when it gets warm?

I don't know what else to tell you?

Sorry, I don't know about the hz?