Hey guys, I recently purchased a 02 a6 2.7t, the engine rpm shutters up and down while at idle and in any gear, it jumps about 1000 rpm at a time every 2 seconds,l. When I put it in reverse the car shuts off completely. I had thrown and ob2 reader on it, and I got 2 codes:
p0346 camshaft position sensor circuit range performance bank 2
p0341- camshaft position sensor bank 1

I have replaced both these sensors, erased the codes taking the battery terminals off, reset the check engine light, fired it up and I recieve the same problem, with same codes.. any suggestions on what it could be?