Party 1.4 TDCI Recurrent camshaft sensor failure

Good to all, I have a Ford Fiesta 1.4 TDCI (F6JB) with a problem in the camshaft sensor. It turns out that after checking wiring and signal with the oscilloscope determined that the sensor was bad because it did not give hot signal. But after changing it, I kept failing, but a different one in this case was what the two -wave crest was communicated so that sometimes the wave instead of square was rectangular. After re -checking the wiring and it determines that this sensor must have come badly and replace it. But the new sensor stops giving signal when it seems, especially when revolutionizing the engine or turning in a roundabout. The funny thing is that when I stop giving signal if I disconnect the connector and plug it back in this time and this time it does not seem to fail when accelerating or turning. I have checked the connector and switchboard pins, the wiring that does not present short circuits, positive, among them and that has good continuity and everything seems correct. That touches me a bad sensor can happen but two is already very rare. The error that usually reports is the P0341. Has something similar ever happened to you? Any suggestion? Thanks beforehand.

Possibly the cables that lead to the camshaft position sensor (CMP) are too close to the spark plug cables, the connection being affected.
The electrical connection between the CMP sensor and the PCM may be poor.
The rally ring is perhaps in poor condition.
The camshaft position sensor (CMP) could be defective.

The engine is diesel, so there are no spark plugs.
I have also compared the signal between the crankshaft sensor and the camshaft in case the "dances" signal with respect to the crankshaft which would indicate some type of mismatch in the distribution.
The crankshaft rally also seems in good condition and the signal that is received from this also seems correct.
It is the second camshaft sensor that I install and with each one the failure has been different, but after all the same failure of the camshaft sensor.

This engine carries a hollow shore camshaft with false cams, if it had any distribution failure it is possible that these cams have turned out of phase.

The problem is that the engine gives camshaft sensor failure failure or something, it is simply sensor failure (or does not give a signal or makes it weird) and the sensor takes reading from the camshaft pulley itself, not the camshaft itself itself. So the "real" state of the camshaft would not affect the sensor signal, if it would affect the operation of the engine but not the signal. And there is the problem the engine works well, but the signal or disappears or "distorts" making the car turn the breast light and preventing sometimes from starting for not being this (the sensor) giving a valid signal.