Okay so on my 2002 hyundai elantra gls, I have a code P0340 camshaft position sensor circuit malfunction bank 1. Camshaft sensor is brand new. Checked all voltage and whatnot between pcm and sensor. Everything is good. I have swapped out several pcm and i still get same code. Resistance in crankshaft sensor is between the resistance numbers. I have played around with the timing and even retimed the crank to the cam tdc. cam gears notches are at 2:30 o clock like i have read. What could possibly be the problem??? PLEASE HELP ME OUT!!

THanks in advanced.