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ECU cuts power to Camshaft Position Sensor after starting car. (k20a2)

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3
Hey guys,

So I've got this weird issue, my car has the trouble code P0340.
After I reset the ecu, turn the ignition on, the wires of the sensor are fine (12v & 5v).
Then when I start the car, I get the code again on the exhaust cam side and there's no more power on the wires to the exhaust side sensor until i reset the ECU again. I've replaced both sensors.
To me this is a weird situation, Hope someone can explain to me why this is happening.

Sometimes this code will drop when timing chain has stretched,

Thanks!
 
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