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Cam sensor broblems

Hi,
I have an LS series in a 1967 Camaro with an LSA engine.
My problem is that error code p0340 comes all the time. I have replaced the camshaft sensor 3 times with a new one, I have measured the wires which are ok. I'm clueless

Does the engine run?

If yes, how well or bad?

Engines run god

 

the engine starts well and runs well. I have changed the ecu power from the cable start to the battery.
the camshaft sensor wire does not run near the ignition coils. I have also replaced the crankshaft sensor. I also noticed in the palm controller the battery current while the engine was running was 12.7V but the charger was charging 14.6V
Hi,
I'm updating the question because a bug was found. We put a resistor between the signal and ground and changed the input to 12v> 5v. Now the error code no longer comes.