Hello. Previously I only had a code active for my rear oxygen sensor due to aftermarket headers and no cat. My car has developed a power loss and it just drives weird and some times doesn't start up and I'm assuming that due to a cam position sensor listed on the codes active below.

The current codes now active are: P1361-Camshaft position A, P0325- Knock Sensor circuit bank 1 or single sensor, P1366- Camshaft position sensor B, P0411 Secondary air injection system incorrect flow detected.

Now as far as the P0411, I think that's from my intake arm going to the throttle body. I discovered it has a hole on the bottom and it was taped by the previous owner lol. Could this be a possibility?

As far as the camshaft position sensors, I had the head rebuilt not too long ago, Is it possible to mix up the sensors or would it not matter? Is there a specification for maximum resistance allowed or maybe check to see if it's producing voltage with a dvom?

The knock sensor is most likely located under the intake manifold I'm assuming. I think I see a plug/wire hanging some where below and they could of simply damaged the sensor when they removed the head? I'm unsure at the moment until I get my hands in there.

Any help would be appreciated. I don't want to just throw parts at it unless its necessary to replace the cam position sensors because I would think its rare for the sensors to go bad on a Honda so quick? or does it on these particular models..

Any help would be appreciated once again thank you all.